Khloe Kardashian has revealed she was surprised that sister Kim posted a picture of the two of them in their bikinis on Twitter.

Kim, 28, posted the photo of them taken during a shoot for the weight loss product QuickTrim, which they endorse.

However Khloe, 25, said she did not know and told E! Daily 10: “Honestly, I didn’t even know Kim had Twittered that photo. I was like, you didn’t even ask [if] you could twit-pics a bikini photo of me!”

Kim said that she was happy to show off her body: “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.”

However Khloe said that she herself is not quite there: “Kim is at her weight goal. I’m not.”