Kim Kardashian, known for her signature curves, is looking to drop a few pounds now that she's single. According to the starlet, she is on a weight loss mission and has already lost six pounds within one week, as seen in recent photos at a Dress for Success charity event.

I'm on a mission, Kardashian told US Weekly on March 22. I figure, I'm single. Now is the best time to get in shape.

Kardashian caught up with US Weekly at a Dress for Success charity event last Thursday, detailing how she lost six pounds in seven days.

Kardashian said she works out twice a day with celebrity trainer Gunnar Peterson, and sometimes with her brother Rob Kardashian as a workout buddy, using the treadmill in the early mornings and strength training or Pilates at night.

And she's serious. In fact, Kardashian tweeted at 1:25 a.m. on Monday that she was having a late night workout. At 11:17 a.m., she tweeted, Up early to get this workout in! Get fit or die trying ;-) and Arms and Abs today.

In addition to a strict workout regimen, Kardashian said she is eating healthier too, completely wiping her diet of gluten, sugar and dairy.

No more sitting at home, eating too much, she told US Weekly.

Her weight loss mission was fueled by her impending divorce from soon-to-be ex-husband Kris Humphires, whom she was married to for only 72 days before filing for divorce in October.

I'm so ready, emotionally, for this to be over, Kardashian told US Weekly about her divorce.

However, the divorce may not be smooth sailing for Kim Kardashian, as a source told E! News that Humphries is holding out for more money -- $7 million, to be exact - before he signs the papers.

Kris is dragging it out. Kim is ready to move on, but Kris is hoping that stretching it out will get him even more money, the source told E! News.

View the slideshow to see Kim Kardashian's six pound weight loss and other photos of the curvy starlet.