PARIS Hilton thinks Britney Spears looked "cool" with no hair. The socialite - who is currently starring in new reality show "Paris Hilton's British Best Friend" - encouraged contestants in the program to shave their heads to resemble the "Womanizer" singer during her public meltdown. Paris said: "Britney looked cool with no hair." In the series, Paris is trying to find a best friend who lives in the U.K. The hotel heiress - who was at one time close to Britney - admits she finds it difficult to make friends she can really trust. She added: "I find it hard to know who I can trust. A lot of people just want to be friends with me to become famous themselves. I get used a lot." - Expo The 27-year-old star has been learning British slang in bid to impress her potential U.K. pal. She explained to Britain's The Sun newspaper: "I've been taught some slang. If you're talking about a gross guy then you say he's a minger? I like that. And if you think a guy's hot then you call him 'fit.'" - Expo