Rihanna strips down to a sports bra for sultry new Puma campaign ad

She was named creative director of Puma in December last year.

But Rihanna's work for the sports brand is starting to gain momentum as he second sultry ad campaign was teased by the singer on Tuesday. 

Seen spinning around in front of a wind machine in a sports bra, the musician appears to be adding her own effortlessly cool edge to the German brand. 

Releasing the video to her 25.1M followers, she wrote: 'Step up your training gear. Bring it with @PUMA #ForeverFaster'

Rihanna - like sportsmen Usain Bolt and Mario Balotelli before her - took on the role as a brand ambassador late last year to oversea the womenswear branch.

WWD reported at the time that Rihanna would 'work with Puma to design and customise classic Puma styles as well as create new styles to add to the Puma product portfolio.'