Kate Upton reveals sexy secrets

Kate Upton says her sexiness stems from happiness.

The 22-year-old model-turned-actress took home the Sexiest Woman prize at the annual People Magazine Awards on Thursday night.

And the stunning blonde insisted in a new interview that having a positive outlook is the key to her attractiveness.

"I'm so excited, I mean it's amazing," she told Access Hollywood of her big win.

"I always try to be sexy because to me that's confidence and being happy and it's amazing to be awarded for that."

As she accepted her prize at the star-studded ceremony on Thursday, Kate apologised to her teenage brother David for any embarrassment caused on her part.

"You have to imagine being an 18-year-old boy and your sister being called Sexiest Woman, it must kind of suck, although he never complains," she added to Access Hollywood.

Kate also revealed in the interview she’s looking forward to the upcoming holiday season, because it means she can have a break.

"Next is a vacation because it's Christmas…and I can't wait,” Kate added.

Kate’s career went from strength to strength after she was named the cover model for Sports Illustrated’s infamous swimsuit issue in 2012.

She has since covered publications including Vanity Fair and Vogue, and starred in movies such as The Three Stooges and The Other Woman.

Other award winners at the People ceremony included Jennifer Aniston, who won Movie Performance of the Year for her turn in independent film Cake.

Picking up her prize, Jennifer said: “This is so exciting. Is this real life' I really now have experience what a labour of love truly means. This movie was nothing short of that.”