Wearing a wedding dress didn't work out that great for Kim Kardashian this year.

So, joining her family en masse to cheer on brother Rob Kardashian at Monday night's Dancing with the Stars performance finale, the reality star, 31, tried a different sartorial approach: A tuxedo!

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Channeling, perhaps, the groomsmen attire of Kris Humphries -- or simply mom Kris Jenner's look -- Kardashian wore a sequined tuxedo, complete with bowtie, sitting in the audience alongside Kris Jenner, Khloe Kardashian, Kendall Jenner and Kourtney Kardashian. (Kourtney's man Scott Disick also donned prom-inspired formal wear for Rob's big night.)

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 Kim (licking her wounds after filing for divorce from Humphries last month) was ecstatic when her brother scored a perfect score in freestyle dance. "Did u guys see that!!!!!! All 10's in the freestyle!!!!" she tweeted. "OMG I swear the whole fam is in tears!!!!! Let's go baby! Team CherBert!"

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Tell Us: Do you love or hate Kim's tux?

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