Iggy Azalea wants Kylie Jenner to release a contours kit.

Iggy Azalea

Iggy Azalea

The 'Black Widow' rapper is a big fan of Kylie's Lip Kit By Kylie line - with her sixth Kylie Cosmetics release selling out in just 15 minutes last week - and decided to pitch a new idea to her on Twitter.

The 'Keeping Up with the Kardashians' star tweeted: "I'm already working on something, just wanted to get your opinion of course."

To which Iggy replied: "@KylieJenner I think you should consider doing a contour kits."

Kylie, 18, is open to Iggy's idea and told her she had just sent her some direct messages to discuss the contour kits.

She tweeted: "I slid in ur dms (sic)"

Iggy then wrote: "@KylieJenner cool, ill buy 100. lol! (sic)"

Kylie - whose sister is model Kendall Jenner - has been thrilled with the reception to her makeup range, which includes lipstick and lip liner duo colours Kylie Candy K, Dolce K, True Brown K, Posie K, Koko K, Mary Jo K and 22.

After her last release sold out in 15 minutes, Kylie took to Instagram to thank her fans, writing: "We sold out in 15 minutes today! And we only keep making more every time! Thank you for all the love and support, I will keep bringing beautiful and amazing quality products to you guys!"