Karissa Shannon and her twin sister Kristina Shannon were spotted at Eden Nightclub with Karissa's boyfriend Sam Jones III last Wednesday, March 30, 2011.

Credit: Zimbio

Karissa Shannon and Sam Jones III pose on the red carpet at the Eric Zuley and Red Cross Charity Fundraiser and Fashion Show at the Highlands to benefit the victims of Japan. 

Later they took some time to themselves outside the Highlands where they shared a romantic kiss.

Credit: Zimbio

Getting in the holiday spirit, Karissa Shannon added a little color to the beaches of Malibu, California on Monday evening (March 14).

The Playboy beauty clasped onto a large shamrock balloon while decked out in a neon thong bikini as she gears up for the St. Patrick's day holiday.

Credit: Celebrity Gossip

Making a brief trip south of the border, Karissa Shannon and Kristina Shannon headed to Cancun, Mexico for the Spring Break 2011 festivities.

The Playboy beauties ventured to the popular locale on Thursday (March 10), with Karissa tweeting, "Taking off to Cancun!!!! I'm so ready to party this party tonight is going to be one memorable party no matter how drunk you are!!!!"

Credit: Celebrity Gossip

Showing off her fabulous form, Karissa Shannon was spotted out on the beach in Malibu, California yesterday (February 23).

Joined by her boyfriend Sam Jones III, the Playboy Playmate looked smokin hot in a yellow bikini as she worked on her tan.

Credit: Celebrity Gossip

Playboy playmate twins Karissa Shannon and Kristina Shannon strutt their stuff outside Katsuya. Karissa's boyfriend Sam Jones III also joined the girls for dinner at the Hollywood hotspot.

Credit: Zimbio

Karissa Shannon was spotted fixing a flat tire the other day in Los Angeles - where it just happened to be raining! What luck! And even worse, she wasn't really dressed for the job..

Credit: Guyism (DC Scrap)

Playboy model Karissa Shannon and her boyfriend Sam Jones III enjoyed a night out with friends at Eden nightclub in LA on January 19, 2011.

Credit: Zimbio

Playboy playmate and former "Girls Next Door" star Karissa Shannon and her boyfriend Sam Jones III are seen on a night out in Los Angeles on January 13, 2011.

Credit: Zimbio

Karissa Shannon and Kristina Shannon visit The Pool After Dark at Harrah's Resort on December 29, 2010 in Atlantic City, New Jersey.

Credit: Film Magic / Getty Images

Kristina Shannon arrives at Focus Features' "Somewhere" premiere at ArcLight Hollywood on December 7, 2010 in Hollywood, California. Also pictured, Karissa Shannon. She and her sister star in the movie directed by Sophia Coppola.

Credit: Zimbio