Rapper and Adidas designer Kanye West has shut down reports suggesting his sister-in-law Kylie Jenner has signed a deal to become the new face of rival brand Puma.

Kim Kardashian's teenage half-sister was rumoured to have been snapped up by Puma bosses to become their new brand ambassador, in exchange for a seven-figure pay-off, according to UsMagazine.com.

However, Kanye, who is set to unveil his Yeezy Season 3 collection for Adidas on Thursday (11Feb16), during New York Fashion Week, took to Twitter on Tuesday (09Feb16) to blast the claims.

"1000% there will never be a Kylie Puma anything," he declared. "That's on my family! 1000% Kylie is on Yeezy team!!!"

The hip-hop star then began to attack Puma officials for trying to poach Kylie and take advantage of her fan base.

"Puma we gone (sic) give you your measly million dollars back!!!" he laughed. "Never try to divide the family!!!"

Kylie has yet to weigh in on the reports, but she is no stranger to Puma. She has modelled the firm's sneakers and other sportswear on her social media pages on multiple occasions, while she is frequently photographed wearing the label's running leggings in and around California.

The 18-year-old has been building up her resume of late - her first Kylie Lip Kit make-up line sold out instantly when it was launched in November (15), while her new colours were also a sell-out success on Saturday (06Feb16).

She also celebrated the release of her spring clothing designs for the Kendall + Kylie Collection, which she created with her model sister Kendall Jenner, at a party in New York City on Monday night (08Feb16).