Kim Kardashian has a noticeably noticeably smaller waistline these days, but she says there is no reason to worry.

"I really feel like I have reached my fitness goal and now I am toned, fit and at a healthy weight and I just need to keep it up!" the reality star, 29, writes on her website, alongside photos of her and sister Khloe, 25, in bikinis from a recent QuickTrim commercial shoot. (Kim had posted one outtake on her Twitter page last week, but she said she wanted to "share the rest" on her official website.)

Kim says she still manages to eat what she wants - but makes sure she works out.

On Thanksgiving, she Twittered that she was looking forward to sweet potato soufflé, fried chicken, turkey, dressing and cranberry sauce. But she said she was planning to hit the treadmill while the food was in the oven. "No excuse for getting lazy during the holidays," she wrote.

As for Khloe, she has admitted dropping 25 lbs. before wedding Lamar Odom in September thanks to QuickTrim.

But after taking a diet break, she said she gained 5 lbs.

"I am now back on my QuickTrim diet," Khloe said earlier this month. "Lamar's the candy man, and guess who eats all of the candy with him? So, I can eat the candy as long as I stick to working out and staying on QuickTrim. It feels good to be back on it."