Kim Kardashian has admitted she owes a lot to her ample behind.

The US reality TV star has become well known for her curves, particularly her bottom, and often shows off her curvy shape on Instagram.

However, she revealed she wasn't always so comfortable with her figure but is now grateful for her butt, reported the Daily Mirror.

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Kim, 33, bared her bottom for a spread in GQ magazine and said: "I remember a time when big butts weren't in any way sexy.

"I spent my college years stuffing myself into tiny jeans, wearing floaty tops to hide my muffin top."

The star - who was recently voted Woman Of The Year at the GQ Awards - went on: "I don't have anything against my butt.

"I've got a lot to thank it for perhaps."