Cara Delevingne finds it hard to be friends with guys.

The 22-year-old model has a large group of female pals - including Rihanna, Rita Ora and Georgia May Jagger - and prefers to be in their company because men just want to sleep with her.

Speaking to the Best of Beauty edition of Allure magazine - for which she posed naked - Cara said: ''I think it's harder to become friends with guys, because guys just want to have sex with you.''

Elsewhere in the publication, the British star confessed to backing a campaign that fights for women to be allowed to bare their breasts in public in the same way men are able to go topless.

Asked her favourite Instagram page, she said it was the @freethenipplelives campaign account.

Cara is famous for her bushy eyebrows but insists she does nothing but ''make sure they are there'' every day, though if she has a big night out she will use ''an eyebrow comb and eyebrow gel'' to ensure they are well groomed.

While Cara was quick to identify her most loved film as 'Anchorman' and 'Scandal' as her must-watch TV show, she struggled to choose a favourite song.

She said: ''That's too hard! I love music. There are too many to choose from.''

Despite her slender frame, the Burberry beauty likes to start her day with a hearty breakfast of ''scrambled eggs, bacon, and toast.''

And completing the quiz on her favourite things, she singled out all of Rihanna's body art as her favourite ''tattoo on someone else''.