They’re always up for big industry events, and last night (April 5) Mary Kate and Ashley Olsen attended the celebration of TEXTILE Elizabeth and James.

The “Full House” hotties both looked to be thoroughly enjoying themselves as they hammed it up for the paparazzi at the Beverly Hills Hotel joined by Nicole Richie, Emma Roberts, and Brad Goreski.

Credit: Celebrity Gossip

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

Miss January 2011 Anna Berglund, Hugh Hefner and Crystal Harris attend 20th annual Literary Awards Festival at Beverly Hills Hotel on November 17, 2010 in Beverly Hills, California.

Credit: Film Magic / PR Photos

AnnaLynne McCord arrives at Variety's 2nd Annual Power Of Women Luncheon at the Beverly Hills Hotel on September 30, 2010 in Beverly Hills, California. 

Credit: Wire Image

Jayde Nicole attends The 20th Annual Night Of 100 Stars Awards Gala at Beverly Hills Hotel on March 7, 2010 in Beverly Hills, California.

Credit: Wire Image / Film Magic