The Kardashian sisters are set to launch their own line of nail polishes.

Kourtney, Kim and Khloe have revealed they have been holding "top secret meetings" with cosmetics brand OPI in the hope of expanding their existing fashion empire with a nail range.

Writing on her twitter page, Khloe said: "Top secret meeting with my sisters for OPI."

Meanwhile, Kourtney admitted she is "obsessed" with the current OPI line.

She tweeted: "Amazing top secret meeting today with @KhloeKardashian at OPI!!! I am obsessed with their nail polish colors! (sic)"

A representative for the brand is hoping more details of the collaboration will become available over the course of the next couple of weeks.

The spokesperson said: "We should have an answer one way or another in the coming weeks."

Kourtney, Kim and Khloe recently teamed up with retail giants Sears to create an exclusive clothing and accessories line, The Kardashian Kollection, which reflects The Fashion tastes of the stylish sisters, and will be aimed at customers aged 17 to 35.

Kim said of the collaboration: "It helps us cater to our fans and to make sure that everyone can have access to The Kardashian Kollection."