Rumer Willis in her ripped pants (c) Instagram
Rumer Willis was left red-faced after she ripped her leather pants during a karaoke session.
The 26 year old actress was celebrating the birthday of her friend, 'Twenty Good Years' actor Jake Sandvig, last night when she suffered the unfortunate wardrobe malfunction.
However, Rumer wasn't too embarrassed about the butt-baring rip as she took to her Instagram account to share a snap of the tear.
The accompanying caption read: "When your brand new leather pants rip while you friend is singing karaoke on there bday. Thank you @jake.sandvig for bringing me a bad omen"
On her own birthday in August Rumer was presented with a gun-shaped cake by her mother Demi Moore to celebrate turning 26.
The '90210' star, whose dad is Hollywood action hero Bruce Willis, posted on Twitter at the time: "Best birthday cake ever. Thank you mama for making this day do (so) special."
The cake was believed to be a reference to Rumer's appearance in 'For the Record', the stage musical tribute to movie director Quentin Tarantino, in which performed the Nancy Sinatra song 'Bang, Bang (My Baby Shot Me Down)'.
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