Ashlee and Jessica Simpson took enough time off from their busy filming schedules to pose next to a precariously balanced cupcake tree at Ash’s 25th birthday in Vegas this weekend. While Jessica chose to hide her bikini behind flowing, see-through fabric, happily-married-to-a-toadstool Ashlee showed no such modesty.

Check out some snaps of the festivities in the gallery below.

[Photo: Getty Images]

Madonna celebrated her 51^st birthday over the weekend in Portofino, Italy, looking her usual age-defying self. Accompanied by her children and boyfriend Jesus Luz, the pop superstar took in a boat trip with everyone wearing custom-made Madonna t-shirts (she’s still a diva superstar, after all) followed by a dinner at the chi-chi Splendido hotel.

Cuddling up to her boy-toy on the yacht, it was clear to see the couple are very much on, although we have to question Madge’s choice of swimwear. Wearing a sport vest and baggy shorts, Madonna looked more like an Edwardian bather - especially with that frilly parasol - than the ripped superstar we know she is. If even Madonna doesn’t want to wear a bikini after three hour workouts each day, what does that say?! [Photos: Splash News Online]

Hang on, didn’t she celebrate this already? Still, Lindsay Lohan took the opportunity to celebrate her actual 23^rd birthday AGAIN by showing off the fact she is totally back with Samantha Ronson. The on-off-on-off-on-off-oh-God-we’re-getting-dizzy-now pair took in a civilized lunch in Malibu yesterday — and not a public row, or broken window was in sight. Perhaps the seventeenth (approximately) time will be the charm for these two? [Photo: Splash News Online]

Rapper/actor Ice Cube made his directorial debut with The Players’ Club in 1998. That same year, actress Leah Remini began working on the hit sitcom The King Of Queens. Both stars were born on June 15th. Which one is older?

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Jason Mewes and D.J. Qualls should be no strangers to fans of gross-out comedies like Clerks, Road Trip, Jay And Silent Bob Strike Back and The New Guy. Both actors were born on June 12th. Which one is older?

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In 1994, lawyer Greta Van Susteren gained fame as a legal analyst for CNN during the O.J. Simpson trial. That same year, quarterback Joe Montana, a four-time Super Bowl champion, retired from the NFL. Both celebrities were born on June 11th. Which one is older?

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In 1996, Gina Gershon steamed up the screen with Jennifer Tilly in the erotic thriller Bound. A year later, Elizabeth Hurley had Mike Myers screaming “yeah, baby!” in Austin Powers: International Man Of Mystery. Both actresses were born on June 10th. Which one is older?

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In 1985, Johnny Depp played a teen on the prowl in Private Resort. That same year, Michael J. Fox played a different kind of prowling adolescent in Teen Wolf. Both actors were born on June 9th. Which one is older?

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In 2004, rapper/producer/fashion designer Kanye West released his first album, The College Dropout. That same year, model/actress/TV host Maria Menounos was named one of People’s 50 Most Beautiful People. Both multi-hyphenates were born on June 8th. Which one is older?

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In 1998, Angelina Jolie won her second Golden Globe in two years for the TV movie Gia. In 2008, Russell Brand made his U.S. breakthrough in the hit comedy Forgetting Sarah Marshall. Both actors were born on June 4th. Which one is older?

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