She’s more famously known for her clean-cut appearance in High School Musical than lusty displays of flesh on the beach but that is just what Vanessa Hudgens experienced on a recent Hawaiian holiday.

The 23-year-old was enjoying a break with relatively new beau Austin Butler, whom she has been dating since September, when her brightly coloured bikini burst open.

Hudgens, whose boyfriend was nowhere to be seen during the incident, quickly clasped her modesty before photographers could take a snap.

Wearing a skimpy multi-coloured two-piece, the star had an array of beaded and silver necklaces draping down her chest, perhaps to the benefit of her nearly-exposed bosom.

According to the Daily Mail, the actress marched over to her beach towel, set under a parasol, to fasten her bikini, all the while wearing a cheeky smile, which was no doubt in contrast to her usual squeaky-clean image.

Although she was on location to promote the release of Journey 2: The Mysterious Island, Hudgens’ filming schedule has been busy.

She has three more films in the pipeline, Gimme Shelter, The Frozen Ground and Spring Breakers, due out in 2012 and 2013.

26-01-12 3 Hudgens bosoms have Hawaiian outburst