British beauty, Cara Delevingne, has opened up about her relationship with Bajan songstress, Rihanna, and explained that she doesn't seem to have many friends that are women because they don't understand her.

Speaking to Grazia magazine about their friendship, the supermodel confessed that they have spent a lot of time together hanging out and get on really well, but she thinks the 'Umbrella' hitmaker leads a lonely life without a group of girlfriends:

"I met her when she was here two years ago doing a gig. And then she sang at the Victoria's Secret show and we hung out. She looks after me when I go to L.A."

She continued: "She's the best, she's such a sweet, down-to-earth girl. She doesn't have that many girlfriends but we have a lot in common. I don't think many girls understand her."

Watch Rihanna's new music video for 'Stay' below: