Rosie Huntington-Whiteley's body insecurity

Rosie Huntington-Whiteley often feels insecure about her body.

The British model admitted she is not always in the mood to be photographed in her underwear and often hits the gym or gets a spray tan to boost her confidence.

The 27-year-old beauty told PEOPLE magazine: "There are times when I don't want to be in my underwear. We all have off days."

The Victoria's Secret angel also confessed she is a huge fan of Angelina Jolie and thinks the actress is the most beautiful woman in the world.

She said: "She's the most physically beautiful woman in the world. And with all of her humanitarian work, she's got a beautiful soul too."

Despite being surrounded by professional make-up artists, Rosie claims she often creates her own looks after learning how to contour from YouTube.

She said: "It's an incredible skill. But's it's tricky to know where to put the bronzer, highlighter and concealer. Whenever I need makeup or hair tips, I just look it up on YouTube."