Jenny McCarthy shows off her hot bod and amazing abs on the January/February cover of Shape magazine. Check out some behind-the-scenes video from the photo shoot, where the 40-year-old blond bombshell reveals how she stays in such great shape. She even “singled out” her go-to exercises. Find out what they are! Plus, Katie Holmes celebrated her 34th birthday on Tuesday in NYC by having some mother-daughter bonding time with 6-year-old Suri, and while most of us are enduring the cold winter weather, Heidi Klum is having some fun in the sun. The 39-year-old supermodel tweeted a sexy snapshot of herself on a beach … topless!

Motherhood is certainly agreeing with Drew Barrymore! The new mom, who just gave birth to her daughter Olive in late September, graces the January cover of Allure magazine and opens up about embracing her body image. The 37-year-old actress tells the mag that even though she "doesn't have the kind of body where it's like 'watch me now! I'm in a bikini,'" she's still comfy in her own skin. Find out what else she said! Plus, Mariah Carey tweeted an adorable snapshot of her 20-month old daughter, Monroe, playing dress up, complete with a pearl necklace. Talk about a diva in training! And Kim Kardashian posted the annual family Christmas card on her blog … but there was one person missing from the shot. Can you guess who it is?

 Jessica Simpson proved that she is one hot mama! The 32-year-old fashion mogul looked radiant while serving as the maid of honor at best friend CaCee Cobb's wedding to "Scrubs" actor Donald Faison in Los Angeles over the weekend. The new mom, who's reportedly pregnant with her second child, walked down the aisle with Donald's best friend, Zac Braff, and donned a form-fitting black gown, which showed off what appeared to be a baby bump! Speaking of pregnant famous females, Kate Middleton made her first public appearance since leaving the hospital in early December at the BBC Sports Personality of the Year awards on Sunday in London, and we're taking a look at some of last week's wackiest getups worn by stars like Kristen Stewart and Kim Kardashian, that just might have you asking: What were they thinking?!

Jessica Alba and her 4-year-old daughter, Honor, were spotted wearing matching black leather jackets in Los Angeles on Thursday. Is it just us, or are they the cutest biker gang ever? Turns out this isn't the first time that the little fashionista has sported a similar style as her mommy. Find out what other matchy-matchy looks they've worn! Plus, Kristen Stewart stepped out in a sexy see-through dress for the NYC premiere of her latest movie, "On The Road," but in true KStew fashion, she switched things up for the afterparty. And we're also taking a look at our favorite celeb TwitPics of the week from Zooey Deschanel, Carly Rae Jepsen, and Mario Lopez. Let us know on Facebook or Twitter which you like best — and why!

Heather Locklear and her 15-year-old daughter, Ava, hit the red carpet for the premiere of "This Is 40" in Los Angeles on Wednesday. Is it just us, or did the lovely ladies look more like BFFs than mother and daughter? Heather's gorgeous only child makes her big screen debut in the comedy flick playing Wendy, the best friend to Judd Apatow's real-life daughter, Maude. Find out more about her role in the movie! Plus, Katy Perry certainly wasn't "wide awake" when she chose her outfit to attend a performance of "A Christmas Story, The Musical" in NYC with John Mayer, and we're taking a look at some of the funniest celeb tweets of the week. Let us know on Facebook or Twitter which made you LOL — and why!

Former "Girls Next Door" star Crystal Harris took to Twitter earlier this week to show off massive engagement ring number two from her fiancé, Hugh Hefner. This officially confirms that the pair have plans to tie the knot … again. Wowza, that sparkler is huge! The Playboy Playmate wrote, "My beautiful engagement ring from Hugh Hefner," along with a montage of shots of the rock from pretty much every angle. Well, hopefully the second time is a charm for this runaway bunny. The two were previously engaged but Harris got cold feet and called off the wedding back in 2011. Plus, the Spice Girls looked absolutely fabulous at the London premiere of "Viva Forever," a stage show inspired by the songs of the popular '90s band, and Dakota Johnson stole the spotlight from her dad, Don Johnson, at the NYC screening of "Django Unchained" on Tuesday.

Jennifer Lopez attended a photo call in Melbourne, Australia, on Tuesday, and the always picture perfect superstar looked gorgeous in an all-white leather ensemble. But upon closer inspection, we were shocked when we noticed some brown stains on her pants. Yikes! This isn't the first time that JLo's had a wardrobe snafu. Find out what other mishaps she's had! Plus, Anne Hathaway looked vamptastic at the New York premiere of her latest flick, "Les Misérables," on Monday wearing some bondage-inspired Tom Ford boots, and Tom Cruise was all smiles at the London premiere of "Jack Reacher," marking his first red carpet appearance since his split with Katie Holmes.

Gavin Rossdale hit the stage at KROQ's 23rd Annual Almost Acoustic Christmas Show on Saturday night in Los Angeles. While performing his hit song, "Glycerine," Gavin was joined by a very special guest … his wife, Gwen Stefani! The rock duo, who hasn't performed together in about a decade, met 17 years ago back in 1995 at this very same event. We're feeling pretty nostalgic right now, especially since Gwen and Gavin look almost exactly the same as they did in the '90s! Do you agree? Plus, Miley Cyrus sported a rather daring ensemble over the weekend during Israeli electronica DJ Borgore's Christmas Creampies concert in L.A., and we're taking a look at some of last week's wackiest getups worn by stars like Corey Feldman and Vivienne Westwood. What were they thinking?!