Vanessa Hudgens risks a nipple slip wardrobe malfunction as her boobs make a break for freedom from her orange jumpsuit on Jimmy Kimmel Live

Vanessa Hudgens struggled to keep her boobs in check during her Jimmy Kimmel Live appearance last night.

Vanessa Hudgens struggled to avoid a nipple slip wardrobe malfunction on Jimmy Kimmel. Copyright [Splash]

Risking a nipple slip wardrobe malfunction, Vanessa showed off her body in a boob-squeezing orange jumpsuit.

And after hours in the tight ensemble, the 24-year-old's lady lumps made a desperate break for freedom as she left the studio.

Vanessa giggled at the paps as she jogged out to sign autographs for fans, struggling to keep her boobs covered and tugging at her neckline.

She teamed her Tangotastic ensemble with gold jewellery and wore her hair loosely across her shoulders, completing the look with vampire-like pointy white nails.

Vanessa Hudgens stopped to sign autographs for fans after her appearance on Jimmy Kimmel. Copyright [Splash]

Vanessa chatted with Jimmy about her latest film, Spring Breakers, revealing that despite her awkward sex scenes with James Franco, she still didn't really get to know him.

She said: "I wanted to do the movie because I love him, like, I've wanted to work with him for a while.

"I thought, 'great, I'll get to know him, get to know his acting techniques', but I still have no idea who the hell James Franco is.

"I don't even have his phone number, I don't have his email, I know nothing about him!"

Vanessa previously revealed that she was "terrified" about filming her threesome sex scene with Ashley Benson and James, which apparently takes place in a pool.

Vanessa Hudgens wore a stunning orange jumpsuit for her Jimmy Kimmel appearance, but we're not sure of her vampire …

She even admitted that she was "not down" with going topless on screen.

She added: "It was just kind of like, 'This is crazy! This is happening!', Hallelujah for Ashley, and the fact that it was a pool kind of made it a lot of fun.

"I was like, 'Peace out for a second. I'm going to swim around.' But it was just great. Everybody was comforting. They wanted to let me know that it was going to be OK and that I'm safe."

[ Related article: Selena Gomez boasts to Letterman that she made ex-boyfriend Justin Bieber cry ]
[ Related article: Selena Gomez trumps Vanessa Hudgens in the style stakes at Spring Breakers premiere ]

Vanessa Hudgens chats to Jimmy Kimmel about Spring Breakers.