Kendall and Kylie Jenner arrive at the 2012 Race to Erase MS Gala held at the Hyatt Regency Century Plaza on Friday night (May 18) in Century City, Calif.

After walking the red carpet, the Seventeen magazine contributors headed backstage to change out of their pretty dresses and walk the runway for the fashion show.

“walking in the Race to Erase MS Gala and Fashion Show tonight! ???? #excited” Kendall tweeted.

Kendall and Kylie modeled looks from the Andy Hilfiger Andrew Charles Rock ‘N’ Roll Collection in addition to a presentation of the debut collection Authentic Icon, inspired by American Idol.

The night benefited the Nancy Davis Foundation for Multiple Sclerosis and its Center Without Walls program which continues to raise funds in order to provide treatment and ultimately find a cure for MS. Guests also participated in a silent auction before enjoying a dinner gala featuring live musical performances by Fitz and The Tantrums, The Tenors and David Cook.

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Kendall and Kylie Jenner hit the red carpet at 102.7 KIIS FM’s Wango Tango held at The Home Depot Center in Carson, Calif.

The two sisters showed off their matching gun-shaped rings for the cameras.

“Lost my voice… Thank you #WangoTango” Kylie tweeted after the concert.

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The day after, Kendall and Kylie spent the day with their grandmother and mom, Kris, for Mother’s Day in Santa Monica.

“Happy Mothers Day! Beeshe this morning,” Kendall posted.

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Kylie and Kendall Jenner touch ground at LAX airport in Los Angeles on Wednesday (April 25).

Kendall, 16, rocked a pair of shredded pants as she waited for her luggage and baggage claim.

Earlier this week, Kendall and Kylie were announced as West Coast Contributors for Seventeen mag.

“People always ask us for fashion and beauty tips, and now we can share them directly with readers. It’s really exciting for us! Our first piece will debut in the mag’s June/July issue and we can’t wait to show you guys!!” Kendall wrote on their official blog.

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Kendall and Kylie Jenner join Scott Disick on the red carpet at the opening of RYU Restaurant in New York City on Monday night (April 23).

It was just announced that the 16- and 14-year-old aspiring models have joined the Seventeen mag staff as West Coast Fashion Contributors!

Their new monthly column, “Kendall & Kylie’s Fashion Journal” will make it’s debut in the June/July issue and will feature the latest fashion and beauty tips.

“People always ask us for fashion and beauty tips, and now we can share them directly with readers. It’s really exciting for us!” the girls shared in a statement.

Kendall and Kylie will also appear in a series of twice-a-month Web videos on Seventeen.com, revealing their latest fashion finds, style inspirations, and tips for girls who want to achieve the looks themselves.

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Kendall and Kylie Jenner hit the shops at Westfield Mall on Saturday afternoon (April 14) in Canoga Park, Calif.

The girls hung out with a group of friends at the mall and it tired them out!

“I’m actually exhausted and its only 8:15pm zZZ” Kendall tweeted after the day was done.

In case you missed it, check out Kendall‘s shoot for Flavor magazine.

“This shoot was the first one done on his new tennis court overlooking the city! How amazing is that view!?” she wrote on her official blog.

Always the gentleman, Cody Simpson opens the door for gal pal Kylie Jenner as they leave the movie theater at The Grove in Los Angeles on Tuesday night (April 3).

The two, along with a few friends, caught a viewing of 21 Jump Street.

Catching up with Cody at the 2012 Kids Choice Awards, he dropped us some hints about his next single: “I actually just finished it. I can’t give away any hints at the moment, ya know but it’s a great song, very dancey!”

Cody added about possible collaborations on his new album, Paradise, “A couple in the works but again I want to keep it all a secret, ya know I want to make sure in June everyone is surprised.”

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Kendall and Kylie Jenner head into Staples Center on Friday night (March 23) in Los Angeles.

At the game, the sisters watched the Lakers win, 103-96 over the Portland Trail Blazers.

PHOTOS: Check out the latest pics of Kylie Jenner

Kendall and Kylie recently debuted new shots from their OK! mag feature on their official blog.

“We got to wear the most amazing dresses, shoes and jewelry and one of our favorite photographers, Nick Saglimbeni, shot the pics!” Kendall wrote.

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