Calvin Harris is desperate to work with Robbie Williams. The "I'm Not Alone" hitmaker - who has previously collaborated with Dizzee Rascal and Kylie Minogue - says the "Angels" singer is top of the list of artists he hopes to team-up with on his next record.

He said: "I want to work with Robbie, he's my number one target now."

Kristen Stewart is scared of her fans. The "Twilight" actress has even contemplated going out in a disguise because she is so concerned by some of the movie's more fanatical followers.

She said: "I'm scared. I feel like I could go out in disguise but they would still recognize my feet or the shape of my leg. They'd say, 'Hey, she looks about right.' And they would just bag me. It's scary."

Katy Perry used to pray for bigger breasts. The "I Kissed a Girl" singer spent hours during her childhood begging God for an almighty bust.

The 24-year-old star - who now has a sizeable chest - revealed: "I remember really vividly kneeling by my bed as a nine-year-old, saying my prayers and asking God to give me boobs that were so big that if I laid on my back I wouldn't be able to see my feet."

Katy Perry gets turned off by men with bad breath. The "Hot N Cold" singer - who is in an on-off relationship with Gym Class Heroes rapper Travis McCoy - would never date a guy who doesn't keep his mouth clean.

She wrote on her Twitter page: "I mean, ladies, how many times did u think that guy was hot but just couldn't deal w/ his breathe? Sense of smell is most important! Agree?"