Kim Kardashian and her sisters show off their airbrushed bikini picture

Kim Kardashian showed off her hourglass shape in a bikini from her Kardashian Kollection – the fashion line she shares with sisters Khloe and Kourtney.

But there’s something about the shoot and the girls’ appearance that just seem impossible – most notably the difference between Kim Kardashian’s middle and her hips.

Kim Kardashian’s waist appears unbelievably tiny and the frilly duke-blue bikini certainly complements her shape which looks incredible.

She is joined by her sisters Kourtney and Khloe Kardashian in the picture which boasts a brooding theme with dark dramatic clouds seen in the background.

Kourtney Kardashian,32, is seen sporting a dark strapless bikini while Khloe wears a lace bikini with a sheer navy kaftan over the top.

The girls skin appears luminous and flawless suggesting the trio have undoubtedly had a little help in the photoshop department.

In fact Kourtney Kardashian, who is currently pregnant with her second child, was seen sporting a baby bump at the time of the shoot in February, but there is no hint of a pregnancy in the snap.

Her abs looked more toned than ever despite photographers capturing her baby bump in snaps on the same day last month.

Kim Kardashian, 31, took to Twitter today to promote the shoot and posted the snap with the caption: “Kourt, Khloe and I put on our favorite bikinis for our new #KardashianKollection swimwear shoot!”

The picture, which seems to have considerable photoshop work on it, comes a day after Kim Kardashian was seen leaving a skin and hair clinic in LA with red patches on her forehead.

It seems the star may well have indulged in a spot of Botox ahead of a glitzy event last night.