Kendall and Kylie Jenner: Khaos in Las Vegas

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Kendall Jenner, 17, and her younger sister, 15-year-old Kylie, didn't let their underage status keep them from enjoying Las Vegas over the weekend. The Kardashian siblings made a Saturday appearance at the Kardashian Khaos store at the Mirage Hotel and Casino, where fans can buy everything from a $35 T-shirt that says "Khloe's My Fave" to a $25 Christmas ornament with a picture of the entire "Keeping Up With the Kardashians" family. The girls donned skinny pants, blazers, and heels — outfits that Kourtney, Kim, and Khloe would certainly give a thumbs up! — as they met with some of their many fans.

After the meet and greet, Kendall and Kylie stopped by Siegfried & Roy's Secret Garden and Dolphin Habitat, where they said hello to creatures of a different type. They got up close and personal with a parrot and a dolphin, who were not reduced to tears when they were faced with the reality stars.

The teens, who were only about 12 and 10 when their family's show began in 2007, are now celebrities in their own right. Both have modeling careers, and Kendall debuted a cover of Blank magazine just last week. They've also unveiled plans to team with PacSun on an affordable clothing line, which will be available online and in stores in February. The line will include California-inspired dresses, crop tops, collared shirts, and stretch pants.

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"Everyone always talks about how much they love our style," Kylie told People last month. "So we took some of our favorite pieces from our closets and made them our own."

Will you check out Kendall and Kylie's clothing line?

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