Washington, Apr 18 : Kim Kardashian is sweating it hard in the gym these days because she is determined to get a "six-pack by summer".

The reality TV star is getting her body ready for a bikini, and she has already brought her size-6 physique down to a size-2.

"I have been going sooo hard in the gym, and I really feel it''s paying off!" Us magazine quoted her as saying in her blog.

She added: "My tummy is soo toned. Why is it that the top part gets ripped first and the lower part is sooo hard to tone up!? I am determined to have a six-pack by summer! In a feminine way, of course."

She has revealed that her routine involves "an upbeat warm-up, then upper-body cardio using 5-pound weights, a lower-body workout with squats and lunges."

And she finishes it off "with an abs series and stretching."

However, despite all the working out, the 28-year-old star is in no mood to let go of her curves.

"I love my curves and have to work out to maintain them. Actually, keeping my shape takes a lot more work than just doing nothing or being super-skinny. So this was about toning up, getting fit," she said. (ANI)