Photo: Jason LaVeris/FilmMagic.com

Going through Kardashian withdrawals? No chance.

Middle sis Kim and mother Kris Jenner have been tapped as the faces of Skechers Shape-ups toning footwear, the company has announced in a press release.

Launching in 2011, the campaign will include a "Shaping Up with the Kardashians" mother-daughter fitness challenge and a holiday giveaway (running now until Jan. 10).

Skechers has also unveiled the "Kardashian Collection," a selection of fitness footwear styles -- ranging from winter boots to sandals -- hand-picked by Kris, Kim, Kourtney, and Khloe.

"My mom and I are thrilled to be joining the Skechers family to help promote health and wellness," Kim says in the release.

"Shape-ups have already impacted my fitness routine for the better.

"I am always on the move and never know exactly when I can fit in my next workout.

"Skechers Shape-ups help me get the most out of every step."

"The Skechers Shape-ups styles are perfect for the woman on the go," adds Kris.

"As a working mother of six, I am constantly on my feet, running from one appearance to the next, but with Shape-ups, I am always working out, even when I'm working."

In other words, they like it, they really like it.

And judging by how toned Kim looks in her new bikini campaign for Beach Bunny Swimwear, we can't blame 'em!

Meanwhile, check out Kim's Bebe jewelry line.

Get more on Kim Kardashian at PopEater