The glamorous partners of the world's best tennis players, including a tech millionaire, an MLS heavyweight, and a friend of Prince William

• Tennis is one of the most stylist sports you can watch.
• It's only natural that its athletes end up in relationships with some of the most glamorous people on the planet.
• We've profiled the boyfriends, girlfriends, husbands, and wives of the tennis stars.
• The list includes a friend of Prince William's, a tech millionaire, and an American soccer heavyweight.

Tennis is one of the most stylish sports in the world.

The men and women on the ATP and WTA Tour get to serve in some of the most famous cities in the world, competing for prizes that run into the millions.

But they are not the only ones bringing the glamour. No — their partners can often be just as interesting.

INSIDER has profiled the boyfriends, girlfriends, husbands, and wives of some of the most popular athletes in men's and women's tennis — and some pretty impressive people make the list.

The list is ranked in ascending order by the number of Grand Slam tournaments each tennis star has won.

Keep scrolling to meet 11 of the most glamorous partners of the best tennis players in the world.

SEE ALSO: People are asking why GQ used quotation marks to name Serena Williams as 'Woman' of the Year, and the magazine has responded

DON'T MISS: Alexander Zverev destroyed the greatest men's tennis statistic of the year when he beat Novak Djokovic

UP NEXT: Venus Williams has settled a 'wrongful death' lawsuit with the family of the 78-year-old man who was killed in a multi-car collision last year

11. Nick Kyrgios and tennis player Ajla Tomljanović.

Ajla Tomljanović is a tennis player in her own right, though lesser-known than her boyfriend Nick Kyrgios, who is one of the most polarising personalities in the sport despite never having won a Slam.

Tomljanović, 25, turned professional in 2008, broke into the top 50 ranked women in 2014, and reached her first WTA final in 2015. She is yet to win a WTA tournament, but has reached a final on three separate occasions — two of which arrived in 2018.

Tomljanović may be one to watch to watch next year, and could be seen practicing with Kyrgios should they be competing in the same event on the same day.

10. Karolína Plíšková and sports commentator Michal Hrdlička.

Michal Hrdlička, husband of 2016 US Open finalist Karolína Plíšková (who has also never won a Grand Slam), is a media personality and comments on sports events for Czech Republic television shows.

He has a particular interest in winter sports, soccer, and tennis, and began dating Plíšková in 2016. They got married in Monaco in 2018.

9. Sloane Stephens and Toronto FC striker Jozy Altidore.

Jozy Altidore is one of the most famous names in American soccer.

He burst onto the scene as a promising 16-year-old at New York Red Bulls in 2006, before moving to Europe to play for the La Liga team Villarreal in 2008. He represented the Dutch team AZ and the Premier League side Sunderland, before moving back to the MLS in 2015 to play for Toronto FC.

He is a two-time U.S. Soccer Athlete of the Year, has played for the United States men's national team 110 times, and has scored 41 international goals.

Altidore can often be seen supporting girlfriend one-time Grand Slam winner Sloane Stephens, the 25-year-old 2017 US Open Champion, at tennis events and has been spotted in the crowd at the 2017 Rogers Cup (see above) and the 2018 French Open.

See the rest of the story at INSIDER