They may have split up in February, but earlier today (March 31) Pete Wentz and Ashlee Simpson were spotted out together in Los Angeles.

The “Pieces of Me” songstress and the Black Cards rocker took their son Bronx to the Beverly Glen Mall where they grabbed some Starbucks libations.

Not blinking an eye as she transitions into life as a single mother, Ashlee Simpson took young son Bronx out to the 2nd Annual Milk And Bookies Story Time Celebration in Los Angeles on Sunday afternoon (March 20).

Recently separated from Fall Out Boy rocker Pete Wentz, the "Pieces of Me" singer made her way over to the Skirball Cultural Center venue while attending the good-hearted weekend get-together with her little one.

Credit: Celebrity Gossip

Looking as if she may be gearing up to decorate a bachelorette pad, Ashlee Simpson spent the day browsing the offerings at a local furniture store in Los Angeles, California on Monday (March 14).

The newly single Hollywood mommy was accompanied by her mother, Tina, and young son, Bronx, as the trio rummaged around Lotus Home for possible new home decor purchases.

Credit: Celebrity Gossip

Looking as if things aren't as bad as rumored when it comes to their divorce, Ashlee Simpson reunited with Pete Wentz in Hollywood, California over the weekend.

The "Pieces of Me" singer sat shotgun as her Fall Out Boy rocker ex-hubby did the driving while the former couple ordered up a bite to eat at In-N-Out Burger's drive-thru.

Credit: Celebrity Gossip

Is newly single Ashlee Simpson already moving on?

A month after filing for divorce from rocker Pete Wentz, Simpson was photographed at an L.A. mall with another musician, Craig Owens of the band D.R.U.G.S.

But a source close to the singer/actress says reports of a budding romance with Owens, 26, – who is signed to Wentz's Decaydance Records – are just not true.

"Craig is a longtime friend and was comforting Ashlee during this difficult time," the Simpson source tells PEOPLE. "She's not moving on. There's no race for a new relationship. They're friends."

Recent reports that Simpson, 26, and Wentz, 31, are gearing up for a custody battle are also untrue, according to the source. "Ashlee and Pete's split is amicable and they're working together to make this as positive a situation for [2-year-old son] Bronx as possible."

"Right now her attention is on Bronx and some new work projects she has coming up. That's it."

So what does Wentz think of all this?

Says a source close to the rocker: "The only thing on Pete's mind right now is spending as much time with Bronx as he can before goes out on the road next week."

Credit: PEOPLE (Marisa Laudadio)

It appears Pete Wentz is at odds with his soon-to-be ex-wife Ashlee Simpson over custody of their 2-year-old son, Bronx.

The musician, 31, filed a divorce response Tuesday in Los Angeles Superior Court seeking joint custody of their child.

Simpson, 26, who filed for divorce last month, indicated in her filing that she's seeking sole custody of Bronx with visitation for Wentz.

However, legal experts say that because of the limited detail in divorce filings, it's too early to say if the couple are truly headed for a custody battle.

"We remain friends and deeply committed and loving parents to our son Bronx, whose happiness and well-being remains our No. 1 priority," the couple said in a previous statement.

Wentz's attorney wasn't immediately available for comment, but a source close to Wentz tells PEOPLE, "There's no fire. It's a very straightforward response asking for joint custody and fair distribution of attorney's fees. He's not gearing up for a custody war." 

Credit: PEOPLE (Ken Lee)

First item on Ashlee Simpson's post-divorce checklist: find a new pad.

A source tells Us Magazine the singer-actress, 26, has been crashing at her parents' place since she filed for divorce from Pete Wentz February 9 (the Fall Out Boy rocker, 31, has been staying at their $4.5 million Beverly Hills home) and on Wednesday she seemed determined to change that.

Simpson spent the morning house-hunting with a real estate broker in the Beverly Hills area, a second insider says.

"They drove by a few houses in the $3 to 4 million range," the source tells Us. "Ashlee didn't get out of the car and was quiet and subdued. At one point, she was going to get out of the car but when she saw photographers she decided to stay in the car and then went home."

One criteria for Simpson's new spread is that it's suitable for her two-year-old son Bronx.

"The homes were two-story traditional style homes in a family neighborhood," says the source. "One of the houses was just up from the street from Coldwater Park where she and Pete like to take Bronx to play."

Another plus, adds the insider, "The homes were also very close to [sister] Jessica Simpson's house, which would be nice for her."

Credit: Us Magazine

When the going gets tough, the tough go partying -- at least Ashlee Simpson does.

Although their Feb. 9 divorce announcement took many by surprise, pals close to Simpson and husband Pete Wentz tell the new Us Weekly that the spouses of nearly three years "have been talking about splitting up forever."

Simpson, 26, had coped in part with the impending split by having some late, late-night fun. "Ashlee has been out late partying for the past few months," says one insider. Specifically, the singer-actress -- and mom to son Bronx Mowgli, 2 -- hangs with a crew of pro skateboarders in San Clemente, Calif., and returns home at sunrise.

"She would lose track of time," the insider says.

Fall Out Boy rocker Wentz, 31, "started getting burnt out" by those antics, another source says. On the road with his band, he "would constantly check in on Ashlee, and he'd have his friends call the house and her cell to make sure she said she was where she said she was going to be," an insider explains. "He felt like he couldn't trust her."

Credit: Us Magazine

Ashlee Simpson and Pete Wentz are in the process of ending their marriage, but the former couple seem to be proving that their split is indeed amicable.

"They had lunch together today with Bronx at the Beverly Hills Hotel," a source told PEOPLE Monday, adding that Simpson is still staying at her parents' home in Encino, Calif.

Another source says the couple are not reconciling, but that their breakup remains friendly and being good parents to 2-year-old Bronx is their priority.

"They just had a meal together with their son," the source tells PEOPLE. "They're both focused on making this transition as easy as possible for him."

The couple – who pals say split because they wed too young, didn't have enough time to spend together and simply grew apart – announced last week that they were going separate ways.

Wentz, 31, and Simpson, 26, wed in 2008.

Credit: By Dahvi Shira and Pernilla Cedenheim for PEOPLE

Wedded bliss didn't last very long for Ashlee Simpson-Wentz and Pete Wentz.

Although the couple's Wednesday divorce announcement came as a shock to many, insiders saw trouble brewing way back in June 2009 -- when Ashlee, 26, and Pete, 31, were married for a mere 13 months, and prone to explosive blowouts often punctuated by alcohol.

At issue? Balancing their professional and romantic lives with the pressures of parenting an infant son, Bronx, then 7 months.

At the time, the duo fought "constantly," and singer-actress Ashlee was "seriously considering leaving him," one insider said.

Things boiled over at a June 1 party -- where a visibly drunk Ashlee got into a nasty public spat with Michelle Trachtenberg, Pete's ex girlfriend.

Simpson-Wentz was "reverting to drinking and going out, because she is sick and tired of her life," another pal said. The alcohol was "an outlet for her unhappiness, and Pete is getting fed up."

After hanging out in the same social circles for years, the couple got romantic in late 2006 -- and raced to the altar in May 2008, when she was 3-months pregnant.

"Ashlee loves Bronx but jumped into marriage and having a baby too quickly," one pal told Us. "They feel they got trapped in a situation they were too young for."

In Wednesday's statement released by their spokesperson, the couple said: "We remain friends and deeply committed and loving parents to our son Bronx, whose happiness and well-being remains our number one priority."

Credit: Us Magazine

The 2½-year marriage of Ashlee Simpson-Wentz and Pete Wentz is over, Ashlee's rep confirms to PEOPLE.

"After careful consideration, we have made the difficult decision to file for divorce," the couple said through a spokesperson. "We remain friends and deeply committed and loving parents to our son Bronx, whose happiness and well-being remains our No. 1 priority. We ask that everyone honor our privacy as we navigate this next phase of our lives."

According to TMZ, the divorce documents were filed in L.A. Superior Court, with Simpson, 26, citing "irreconcilable differences" and seeking spousal support.

In the court papers, which were signed by Simpson-Wentz on Monday and filed on Tuesday, it says the couple's date of separation is to be determined. Simpson-Wentz is seeking primary physical custody of their 2-year-old son, Bronx, with visitation for Wentz. She is also seeking to go back to her maiden name of Simpson and drop "Wentz."

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Ashlee Simpson-Wentz out doing some last minute Christmas shopping at Kidrobot, Wasteland and American Vintage in West Hollywood, CA on December 23, 2010.

Credit: Zimbio

Tis the season for spending, and Ashlee Simpson was spotted boosting the SoCal economy on a shopping excursion yesterday (December 21).

The “Pieces of Me” songstress was joined by her son Bronx and mom Tina Simpson as she hit up a vintage clothing store in West Hollywood.

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Pete Wentz and Ashlee Simpson leave in good spirits after enjoying dinner at Beso in Hollywood last night, December 15, 2010.

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Ashlee Simpson and Pete Wentz broke out the ugly Christmas sweater, swept their hair back into the mullet of yore and shook their holiday printed pijama pants down to Third Street Promenade in Santa Monica, CA today (December 11).

Joined by their son Bronx Mowgli, the former celeb couple was all smiles as they pose for a family portrait onboard the Old Navy Awkward Holiday Photo Mobile.

Credit: Faded Youth Blog

Kids born around the holidays sometimes feel short-changed in the gift department. But it sounds like Bronx Mowgli Wentz doesn't need to worry.

The son of Pete Wentz and Ashlee Simpson-Wentz turned 2 on Nov. 20, but Ashlee says he'll still have a nice Christmas – though they'll have to branch out in terms of presents.

"He just had his birthday, and he got a lot of gifts," the pop singer, 26, told PEOPLE on Monday at an Alice & Olivia toy drive in West Hollywood. "He'll still have a great Christmas, and he's really into Thomas the Train, but we have enough Thomas, so we do not need that this year!"

As Bronx gets older and more aware, his parents are beginning to develop family routines around the holidays. "For my husband and I, it's nice to start those traditions now," Ashlee says. "What we're doing with the tree, what we did over Thanksgiving ... we actually had an amazing Thanksgiving with Peter's family."

Looking to the future, those traditions will also include sister Jessica Simpson's future husband, Eric Johnson. Their relationship, says Ashlee, is as festive as anything this season.

"She is genuinely very, very happy, and you go to their house and it's warm and cozy, and it's a good feeling," she says. "And he's just a good guy."

And if Eric and Jessica happen to add to the family in the next few years, so much the better. "Of course it would be wonderful if it happened," says Ashlee. "We were actually over there yesterday, and Jessica is a wonderful godmother, and aunt, so I know she would be a wonderful mother."

Credit: People

Ashlee Simpson, Pete Wentz and their son Bronx went grocery shopping at Whole Foods in Sherman Oaks today, November 24, 2010. The couple got into the holiday spirit and bought a poinsetta.

Credit: Zimbio

How has Ashlee Simpson-Wentz been doing since hearing she'll be gaining a brother-in-law?

"Everything is so exciting!" Jessica Simpson's younger sister exclusively told E! News Tuesday when asked how she felt about big sis getting engaged to NFL alum Eric Johnson.

Well, that sounds about right.

Simpson-Wentz, who's been an old married lady for two-and-a-half years now, was also overheard gushing about son Bronx at the Solstice Sunglasses launch in Hollywood, telling a fellow guest, "He's getting so big!"

He sure is. Mom and dad Pete Wentz are already planning his second birthday party!

"It's going to be amazing," Ashlee told E! of the fiesta planned for this weekend at her parents' home in Encino.

Credit: E! Online

Jessica Simpson is off the market!

Sources confirm to Us Magazine that the singer, 30, became engaged to beau Eric Johnson on Thursday, just days after Us broke the news that her ex-husband, Nick Lachey, popped the question to Vanessa Minnillo, his love of nearly five years. Simpson and Lachey, 37, split in 2005, after three years of marriage.

On Saturday, Simpson flashed a sizable ring on her left hand during an appearance at Dillard's at Oak Park Mall in Kansas City.

The Texas native began dating the former NFL player in May while he was estranged from his first wife, stylist Keri Johnson; their divorce was finalized five months later.

Though Ashlee Simpson-Wentz recently told Us that her sister "is happy, so we're all really happy," sources insist that most of Simpson's friends are concerned about Johnson's motives for dating the singer.

"Eric was never that successful in the NFL, but he's always wanted the celebrity lifestyle," a source told Us in October. "Her friends do not trust him."

Credit: Us Magazine

Ashlee Simpson-Wentz, Pete Wentz and their son Bronx out shopping at Tough Cookies Children's Boutique in Sherman Oaks, CA. Ashlee was showing off her new short hair-do.

Credit: Zimbio