Paris Hilton has hit the Pilates mat in a bid to shape up for her new fragrance ad campaign. The socialite is getting ready to launch her latest scent, Fairy Dust, and she wants to look her best. She says:

"I didn't have to lose weight, but I just wanted to look really good. I started doing Pilates."

And, as for the name of her fifth fragrance, Hilton says"

"I just love Tinkerbell and fairies, so I thought it would be really fun."

Hilton has a pet Chihuahua named Tinkerbell, and in 2004 authorised a book in the dog's honour, dubbed the The Tinkerbell Hilton Diaries: My Life Tailing Paris Hilton.