Paris Hilton says London is her favorite city in the world. The socialite - who is currently in the U.K. filming her new TV show "Paris Hilton's My New BBF (British Best Friend)" - was overwhelmed by the attention she attracted during a shopping trip to the exclusive Notting Hill district Monday.

She said: "I love London, it's my favorite city in the world. I'm shooting my new show and having an amazing time."

Britain's Princes William and Harry partied with Christina Aguilera and Paris Hilton on Wednesday night. The royals spent much of the evening drinking cocktails with the showbiz pair at exclusive London night spot Whisky Mist.

Paris attempted to get acquainted with Harry by performing a raunchy dance for him, but the prince was more interested in spending time with his girlfriend Chelsy Davy.

Katy Perry "wet herself" when she was asked to host this year's MTV Europe Music Awards.

The "I Kissed A Girl" singer will make her presenting debut at the ceremony, which takes place in Liverpool, U.K., next month, and couldn't believe organizers wanted her to take on such an important role.

Leona Lewis turned down a £1 million offer to open the Harrods sale. The "Bleeding Love" singer was reportedly asked by the prestigious London store's owner Mohammed al Fayed to open the January sale but refused because they sell fur products.

The 23-year-old star - who was recently voted the World's Sexiest Vegetarian by animal activist group PETA - said: "I'm totally against animal cruelty. I don't have clothes, shoes or bags made from any animal products."

Ashlee Simpson threw a "white-trash" themed birthday party. The pregnant singer, who is married to Fall Out Boy rocker Pete Wentz, celebrated turning 24 with a fancy dress bash at her parents' Los Angeles home last weekend.

One guest revealed: "It had a white-trash theme. Ashlee wore Daisy Duke hot-pants and platform flip-flops with a bathing suit and a fake tattoo around her belly."

Christina Aguilera wants to show her son she is a "super-b***h." The "Dirrty" singer - who gave birth to her first child with husband Jordan Bratman in January - insists becoming a parent hasn't changed her attitude and she is looking forward to showing Max her feisty on stage persona.

She said: "I'm not going to go down the safe route because I have had a child. Motherhood hasn't changed me."