Rob Pattinson, Regis Philbin & More Celebrity Twitter Pictures (Photos)

Joe Biden bids Regis farewell, Jason Segel gets a Muppet look-a-like, and more stars’ Twitter photos.

Joe Biden surprises Regis Philbin to say farewell, Jason Segel finds a missing Muppet modeled after him, and Taylor Swift gets ready for the holidays. Plus, more of the stars’ Twitter photos from this week.

Jason Segel

It’s been a busy month for The Muppets star Jason Segel, who recently made his Twitter debut. The actor and puppeteer is hosting Saturday Night Live this week. On his journey to New York, a Muppet in his image was lost. But when he was returned to him, Segel tweeted in relief, “Safe and sound!!

Taylor Swift

On the night she won her second Entertainer of the Year award at the Country Music Awards, Taylor Swift got into the holiday spirit. “I found fake Xmas trees backstage at the CMAs,” she tweeted.

Demi Moore

Demi Moore and Ellen Barkin were promoting their new black comedy, Another Happy Day. On Thursday night, Moore announced she was divorcing Ashton Kutcher, but just 10 days earlier, she was in good spirits. “Having fun doing press for @anotherhappyday,” Moore tweeted.

Cory Monteith

Lea Michele and Cory Monteith got a jump on the holidays while filming the Glee. “Merry Christmas Episode!,” the actor tweeted, then promoted his character Finn’s portmanteau with Lea Michele’s character Rachel. “#FinchelForever.”

Rosie O’Donnell

Rosie O’Donnell hasn’t held back on her new show on the OWN network, addressing such topics as police brutality at the Occupy Wall Street protests. This week, O’Donnell tweeted a photo of a “dynamic duo”—Chelsea Handler and Jane Fonda. 

Selena Gomez

Her boyfriend Justin Bieber’s paternity suit may have been dropped, but Selena Gomez looks like she has children on the brain. “Baby love :),” the actress and singer tweeted. “my friend had her baby boy Hudson.”

Mario Lopez

Fourteen-year-old vocalist Rebecca Black recently debuted her third single, “Person of Interest.” Extra’s Mario Lopez welcomed her to the set talk about the new track. “It's not even friday and Rebecca Black is here at the grove,” Lopez tweeted.

Brooklyn Decker

Brooklyn Decker took part in the Carrier Classic in San Diego, tweeting this photo on her way to the USS Carl Vinson. Mario Lopez was supposed to shoot hoops with her, but had to sit out on account of an injured knee. “The ball and I are warming up to each other… I'm going to make this game of H-O-R-S-E my *bleep*” Decker tweeted.

Mindy Kaling

Mindy Kaling is currently promoting her new book and got all dressed up for the occasion. “Book party ready!” she tweeted. “Sizzlin'.”

Joe Biden

Regis Philbin is retiring after 28 years on air. Vice President Joe Biden stopped by the set of Live! with Regis and Kelly to wish him well. “Farewell to Regis Philbin during a surprise visit,” Biden tweeted.

Elizabeth Banks

Actress Elizabeth Banks was all over the internet in The Hunger Games trailer this week. But she also posted a picture via her WhoSay page with some adorable dogs that she suspected to have eaten something not so tasty. “PUPPIES!!! (judging by their breath, pretty sure they ate poop right before this moment),” she tweeted.

Ellen DeGeneres

Ellen DeGeneres is such a tease. In this picture on her WhoSay page, the talk show host had a moment with Twilight star Robert Pattinson, but wouldn’t reveal exactly what went on during his visit. “I would love to tell you what Robert Pattison and I are doing here,” DeGeneres tweeted. “But you'll have to wait 'til Friday.”