Kim Kardashian and Kourtney Night Out in Costa Rica

Where else can the Kardashians show off their collection of crop tops in January?

Kim and Kourtney Kardashian proudly flaunted their abs in tiny crop tops while heading to dinner during their family vacation in Costa Rica on Saturday night.

They have been changing outfits as much as four times a day in a bid to keep up with the fashion IT crowd at Paris Fashion Week.

And Kim and Kourtney Kardashian ensured they made an equally eye-catching entrance at the Balmain afterparty on Thursday by arriving in coordinating outfits. 

Both dressed in slinky gold and bronze ensembles, which looked like they had come straight off the catwalk at the designer's earlier show, the sisters created something of a stir as they arrived at the Parisian bash.