Today’s celebrity rundown (11 photos)

Making her first US appearance after her split with Russell Brand, Katy Perry showed up to OAK nightclub to host Friday night’s GiveLove charity event in Vegas. ‘The One That Got Away’ singer posed with jewelry designer and co-host Markus Molinari. Katy switched up her pink/blonde hair look to BLUE!

Christina Hendricks scored the March 2012 cover of BlackBook.

During her interview, the ‘Mad Men’ star declared, “I’m a very comfortable naked person. Not in front of other people, but at home and in front of my husband, I feel good not wearing clothes.”

Jessica Simpson is very pregnant now but her due date has not yet been revealed. She told the Daily Mail her cravings throughout her pregnancy.

“I had a buttered Pop Tart this morning. I’m eating a lot of stuff that I ate in my childhood.” Jess added, “Kraft Mac n’ Cheese, Pop Tarts, Cap’n Crunch. Everything’s filled with sugar.”

Keira Knightley is British GQ’s latest cover girl for the March 2012 issue. WANT those heels.

The Kardashian sisters got pretty scandalous for their denim line. -source ‘Shopped much?

Decked out in a furry white coat and white trousers, Jennifer Lopez arrived at the ‘Today’ show. She was asked if another wedded bliss was i the cards and she replied, “I don’t know. I don’t know. I don’t know. We’ll see. I mean, I don’t know. It’s not time to think about that yet. It’s still fresh.” Whoa… maybe wedding #4?

I don’t know whether to comment on Justin Bieber’s new sleeked back, darker hair or that bright blue outfit. He showed up with this new look at the 2012 NRJ Music Awards in Cannes, France over the weekend.

High school sweethearts reunited. Taylor Lautner was spotted with ex-girlfriend Sara Hicks for Cirque de Soleil’s OVO show. There is no word yet if they are officially dating but they look very happy. The two dated before Lautner made it big with the Twilight saga. Now he has scored multiple movies and Hicks has become a cheerleader for the LA Clippers.

Rachel McAdam’s sister has an awesome job. She is Rachel’s makeup artist. Rachel covers Stella and talks about her sister working as her makeup artist.

“Working with her is amazing because your family can be so honest without hurting your feelings. And I really trust her aesthetic eye. When we travel they book separate hotel rooms for us, and we say, ‘We can just bunk together. We’ll have two twin beds.’ Never in my wildest dreams did I think my sister and I would be travelling around to movie premieres and walking down the red carpet together.”

Anyone else excited for ‘The Vow’ starring Rachel McAdam’s and Channing Tatum? Out in theaters February 10th!