By Cassie Carpenter

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Hipster grunge fashion may be all the rage on catwalks and glossy magazine spreads this year, but Rumer Willis proved today that there is definitely such a thing as taking ripped jeans too far.

The 23-year-old daughter of Demi Moore and Bruce Willis experienced a wardrobe malfunction when her derrire came out of the very distressed denim shorts she was wearing while shopping at West Elm in Los Angeles.

Rumer was the very picture of 1995 grunge in her black-and-white plaid shirt and brown cowboy boots and, after thoroughly browsing the modern furniture store on Beverly Boulevard, she settled on an embroidered sea-green pillow.

Over-exposed: While shopping at West Elm today, Rumer Willis experienced a wardrobe malfunction thanks to the distressed denim shorts she was wearing

Over-exposed: While shopping at West Elm today, Rumer Willis experienced a wardrobe malfunction thanks to the distressed denim shorts she was wearing

Busting at the seams: The 23-year-old daughter of Demi Moore and Bruce Willis ran into trouble when her right butt-cheek came out of her ripped jean shorts

Busting at the seams: The 23-year-old daughter of Demi Moore and Bruce Willis ran into trouble when her right butt-cheek came out of her ripped jean shorts

The House Bunny actress recently debuted a darker hairdo with blue extensions courtesy of Great Lengths, the same company Christina Ricci used when she was tired of her chin-length bob.

However, Rumer's new black hair looked curly and dishevelled as she exited West Elm carrying her big black purse and the shopping bag carrying her precious new pillow.

The eldest Willis-Moore daughter recently joined Demi, Bruce, and sister Scout, 20, for her 18-year-old sister Tallulah's high school graduation earlier this month.

Pillow shopping: After thoroughly browsing the modern furniture store on Beverly Boulevard, she settled on an embroidered sea-green pillow

Pillow shopping: After thoroughly browsing the modern furniture store on Beverly Boulevard, she settled on an embroidered sea-green pillow

Hipster grunge fashion: Rumer was the very picture of 1995 grunge in her black-and-white plaid shirt and brown cowboy boots

'My baby sis graduating,' Rumer said, tweeting a picture of a cap-and-gowned Tallulah to her 178,000 followers.

Rumer once dropped out of USC after one semester, and Scout, who's currently studying at Brown University, was recently arrested for underage drinking.

New hair! The House Bunny actress recently debuted a darker hairdo with Great Lengths blue extensions

New hair! The House Bunny actress recently debuted a darker hairdo with Great Lengths blue extensions

Rather than university, the Whole Nine Yards actress has instead focused on her craft, appearing in films From Within, Sorority Row, Wild Cherry, and guest appearances on several TV series including a recent role as a pot dealer on Comedy Central's Workaholics.

She'll next star alongside Billy Zane and Dominic Purcell in horror-thriller The Ganzfeld Experiment, which comes out next February.

The budding chanteuse also took to the stage last month to belt out rock songs and jazz standards at Hollywood hot-spot The Sayers Club where she's performed three times this year.

Rumer dropped a dramatic amount of weight lately, and many believed it was due to the stress of her 49-year-old mother's split with 34-year-old husband Ashton Kutcher.

However, it appears there could be another reason behind Rumer Willis' rapidly shrinking frame -- she might soon become the face of Australian designer Charlie Brown's newest collection.

She already appeared in a campaign for haute couture label Badgley Mischka last year.

Here's what other readers have said. Why not add your thoughts, or debate this issue live on our message boards.

The comments below have not been moderated.

Hope she's going shopping for new shorts... O.o

Hmmmm you'd think the mix of genes of 2 Hollywood A-Listers might of produced something a bit better!!

Well at least she's not bothered by it and putting her best chin forward.

clearly Bruce's genes were stronger.. poor girl

Hi DM the 80s called they want their story about torn denim shorts back. Ta

Sorry but she is not attractive and the more people say she is the more I think she isn't. - VW, SW19, 20/6/2012 9:18 - Who cares?

She has an odd shaped head.

Malfunction my foot, it is how they are meant to be.

Sorry I think people are so mean - she looks quite pretty here - she never asked to have famous parents, imagine if people were criticizing you like this?

I would HATE to be the child of a celebrity. She can't even go shopping without paps photographing her and horrible, mean bullies making cowardly, anonymous digs on the DM site about her looks. I expect they all look like Greek Gods and Goddesses. NOT!!!!!

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