Mischa Barton has been told to gain weight to keep her role in a new TV show.

Former "The O.C." actress Mischa has agreed to pile on the pounds after producers voiced concerns she had become too skinny.

Penelope Cruz is immune to jetlag. The Spanish-born star spends so much of her life traveling across the world her body never knows what time of day it is.

She is quoted as saying: "I think you reach a point where you have so much jet lag that you can't feel the jet lag anymore. It's just like regular. I wake up and I really don't know which city I am in. I just get off the plane find some make-up and shower and here I am. It's a big adventure."

Demi Moore spends "six figures" on her exercise regime annually. The 46-year-old actress - who is married to Ashton Kutcher, 30 - is determined to keep her body in the best shape possible, so thinks nothing of splashing out on expensive fitness trainers and gym memberships.

Revealing Demi's keep-fit regime includes help from a personal trainer who coaches her through a combination of circuit training, weights and Pilates, a source revealed to America's OK! magazine: "The cost per year is in the six figures."

Jennifer Lopez was star struck when she met U.S. President-elect Barack Obama. The singer-and-actress attended the Latino Inaugural Gala in Washington, D.C. on Sunday evening and admitted Obama was the only person she was interested in meeting.

She said: "He is the biggest star here, even though it's chock-full of celebrities. The night he won the election, you could feel it in the air. I was watching him with tears in my eyes, thinking, 'Yes. Something is different. Something is happening.' We're very excited."