The 31-year-old socialite, who is famed for her curves, had to wear tie-up bikini bottoms but she can explore with other styles after becoming more toned, reported Contactmusic.
"Before, I felt like I could only wear tie-bottoms. Now, since I feel like I've toned up a little bit, I can do the regular bottoms," she said.
Kardashian, who is currently dating rapper Kanye West, says it is important to wear a bikini that suits your body type.
"Make sure you pick a bikini that suits you and your body type. It's also important to have the right make-up to create the perfect summer look. I'll buy a ton of makeup but go home and not use any of it. I'm not that good at liquid eyeliner, but it's one of my favourite looks."