Jason Segel, Olivia Wilde, and More Celebrity Twitter Pictures (Photos)

Kellan Lutz goes punk, Taylor Swift gets cookin’, and more stars’ Twitter photos.

Olivia Wilde swoons over a Muppet, Anderson Cooper and Sir Elton John discuss Lady Gaga’s godmothering skills and Snoop Dogg gives the NBA a piece of his mind. Plus, more of the stars’ Twitter photos from this week.

Zooey Deschanel

Now that she’s a single gal again, Zooey Deschanel is free to dish out thank-you kisses as she pleases. The New Girl star tweeted a big, virtual smooch to all those who tuned in to watch her “adorkable” antics on Tuesday night. “Thank you to everyone who watched #newgirl tonight!!” the star tweeted.

Jason Segel

To Jason Segel, food is no joke. The Muppets star recently sparked an online Twitter debate about the merits of burritos versus sandwiches (he prefers sandwiches), but concluded the discussion by tweeting a picture of himself chowing down on an oversize burrito. “Ok. Burrito lovers,” Segel wrote, pacifying the opposition. “I made a giant delicious burrito. Get off my back. It’s still not as good as a sandwich. Sorry”

Courtesy of WhoSay

Sarah Hyland

Modern Family star Sarah Hyland has been getting cozy with more than just her Geek Charming costar (and current boyfriend) Matt Prokop lately. The young actress recently got a chance to meet and tweet a photo via Whosay of herself and Prokop with pop sensation Rihanna. “AND I forgot to tweet this a while back. A picture of me … @mattpro13 .... And... @rihanna!!!!!” Hyland wrote excitedly.

Heidi Klum

No one can accuse supermodel and Project Runway host Heidi Klum of not living life to the extreme. The blond beauty spent the day after Thanksgiving working off any extra turkey-induced pounds by rock climbing. She tweeted a photo of herself near the top and said, “Life: Give it all you’ve got!”

Courtesy of WhoSay

Anderson Cooper

CNN news show host Anderson Cooper ventured out to Sin City on Wednesday to talk to Sir Elton John about fatherhood, his hit Las Vegas show, “The Million Dollar Piano,” and what it’s like having Lady Gaga as his son’s godmother (she likes to sing “Somewhere Over the Rainbow” to John’s 11-month-old Zachary). Cooper posted a photo on his WhoSay page of himself with the pop legend, writing, “In #Vegas with Sir Elton John.”

Lily Donaldson

Lily Donaldson keeps very good-looking company. The British supermodel tweeted a photo of herself and a group of fellow pink-robed Angels frolicking backstage at the Victoria’s Secret Fashion Show. “A pic from just before the @VictoriasSecret Fashion Show..One v sexy elevator ride...haha @Doutzen @marynalinchuk1,” she tweeted.

Taylor Swift

Few stars get as excited about the holidays as Taylor Swift does—or as arts-and-craftsy. In addition to celebrating the season by ++making homemade snow globes, Swift baked up a storm. She tweeted a photo of herself in the kitchen and wrote, “Winter = baking season. It’s on.”

Courtesy of WhoSay

Kellan Lutz

Funny… Stephanie Meyer never mentioned Emmet Cullen’s mohawk. Kellan Lutz, who plays the muscular vampire in the Twilight film series, gave Movember a new meaning this week when he shaved his hair into a mohawk, posted a photo on his WhoSay page of his new punkish hairdo, then shaved the rest off for an entirely bald do. “Movember equals MoHawk month right, or was it Mustache? ... Out with the old and in with the new, good bye dark hair it’s been fun,” the star tweeted.

Olivia Wilde

To Olivia Wilde, what tops meeting former president Bill Clinton? Meeting a Muppet, of course. The In Time actress guest-starred on last week’s SNL, which was hosted by Jason Segel and the Muppets, giving Wilde the chance to meet the “swoon”-worthy Muppet pianist, Rolf. “Met Rolf the dog backstage at SNL and he put his paw around me… Thus topping my Bill Clinton shoulder squeeze. Swoon,” the starlet tweeted backstage, including a photo of herself and her new canine friend.

Demi Lovato

Demi Lovato seems to have fully embraced her new red-headed identity, even bonding with her tour-mate and fellow “ginger” musician Travis Clark. The pair posed in front of a Christmas tree for a photo that Lovato tweeted. “Happy holidays from the two gingers on tour!!! :)” Lovato wrote.

Sara Bareilles

Singer-songwriter Sara Bareilles made sure that her last appearance judging NBC’s The Sing-Off was a memorable one. The singer took to the stage with a capella group Urban Method for a rendition of her single “Gonna Get Over You,” complete with the same kind of 1950s frocks and leather jackets featured in the song’s music video. But before the curtains fell on the finale, Bareilles found time to snap a photo of herself with fellow judges Ben Folds and Shawn Stockman and tweet, “It’s on!”

Courtesy of WhoSay

Snoop Dogg

Being deprived of the chance to root for his favorite basketball team this season has got Snoop Dogg frustrated. The avid Lakers fan donned yellow sunglasses, a Lakers T-shirt and a tough-guy look in a Whosay photo that he tweeted after news broke on Wednesday that the NBA had been unlocked.  “Hurryup n unlock the f---n nba I'm sick of this s--t we need to c my lakers getit n!!” the rapper tweeted.