Kim Kardashian wears Kanye West's Saint Pablo T-shirt featuring bikini tennis shot from her vacation in Mexico

She's often spotted representing her husband Kanye West's brand by donning Yeezy pieces and tour merchandise. But on Thursday Kim Kardashian's promotion for Saint Pablo was particularly special, as it seemed Kanye, 39, had used the star as his muse.

The long-sleeved T-shirt featured an image on the back of Kim, 35, playing tennis while on vacation in Mexico.

Kim had previously shared the racy image on August 26, writing on Instagram: 'Bikini tennis anyone?'

She had worn a nude, bandeau bikini top with a coordinating pair of high-cut bottoms, as she played tennis with a friend in a bright red one-piece swimsuit.

The photo was taken while the star enjoyed her vacation at friend - and creator of Girls Gone Wild - Joe Francis's Casa Aramara Estate in Puta Mita, Mexico.

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Flashing her figure:  The image showed off Kim's toned arms and legs as well as her sculpted stomach as she hit the court in a tiny bathing suit

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The couple that designs together... The image on Kanye's shirt had previously been posted by Kim on Instagram on August 26, with the star captioning it: 'Bikini tennis anyone?'

On Wednesday Kim sported seemingly the same pair of over-sized sunglasses from the original snap, as she showed off the new piece of merchandise.

She wore the long-sleeved, black T-shirt in a large, loose-fitting size, sporting it as more of a dress along with daring boots.

The stylish star accessorized her look with a striking pair of thigh-high, black leather boots. 

Kim carried a small, chic black leather handbag, and wore her long, raven tresses in a center part and styled in soft waves. 

Meanwhile, younger sister Kendall Jenner, 20, was spotted stepping out in New York City the same day.

She wore a long-sleeved, grey T-shirt, that appeared to also be from brother-in-law Kanye's line, as it featured the same font as his other merchandise.