Watch: Miley Cyrus almost pops out of top on Jay Leno, he talks to her chest

My-oh-Miley! The former Hannah Montana star had the audience and host of The Tonight Show, Jay Leno, on tenterhooks as she repeatedly threatened an imminent wardrobe malfunction in a teensy-tiny bustier.

The 19-year-old maintained her dignity as the famous-chinned host talked to her barely covered, microphone-chipped breasts. Seriously, watch the footage above and note the lack of eye contact.

Miley spoke of her engagement to Aussie Hunger Games star Liam Hemsworth, and revealed that she too has thrown up on stage like Justin Bieber and Lady Gaga (albeit, in a bucket held by her mum out of sight of fans).

But the funniest revelation came when Miley chatted about her upcoming guest-starring role as Southern girl Missi on Two and a Half Men. Her character is a love interest for the "half" man of the show, 19-year-old Angus T Jones (he's 19? Talk about growing up fast!).

"It was kind of weird. Because when I'm doing it the prop guys and all these people, they're like, 'Do you have your [engagement] ring on?' And I'm like, 'Ugh. This feels weird', like taking off my ring to make out with Angus," Miley confessed.

"It's creepy, it kind of felt a little weird at first."

Miley also launched the first clip from her Two and a Half Men appearance, alongside the show's stars Ashton Kutcher and Jon Cryer. Watch below:

In other Miley news, she and fiancé Liam got matching tattoos quoting a 1910 speech by former US President Theodore Roosevelt.

"So that his place shall never be with those cold and timid souls who neither know victory nor defeat," reads Miley's tatt.

"If he fails, at least fails while daring greatly," reads Liam's ink.

Miley and Liam: Lovers in ink!
Images: Instagram

In pics: Celebrity wardrobe malfunctions

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