Alexis Ohanian has heaped praise upon Serena Williams in a touching tribute to the tennis star.

Speaking to Humans of New York at the Met Gala, the Reddit co-founder applauded his fiancée for her ability to give her all to everything in life – especially to being a mother.

“She has the biggest heart,” he said. “Everyone sees her success as an athlete, but all of that is layered on the size of her heart.”

“She gives 100 per cent of herself to everything she does: as a friend, as a lover, and soon, as a mother.”

Ohanian and Williams posed for a photo at the annual gala which is held at the Metropolitan Museum of Art. Colloquially referred to as the “Oscars of the East Coast”, it is one of the most intensely coveted events of the year and termed the biggest night in the fashion industry.

Wimbledon 2016 final weekend in pictures Show all 17 1 /17 Wimbledon 2016 final weekend in pictures Wimbledon 2016 final weekend in pictures Wimbledon in pictures Serena Williams and Andy Murray were victorious at Wimbledon in 2016. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Beyonce and Yay-Z watch on from the Royal Box. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Sir David Attenborough looks on as the match begins on Centre Court. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Former golf professional Gary Player was among those in attendance. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Williams breezed through her opening service game to set the tone. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Kerber had to fight hard in her very first service game as Williams looked to apply pressure. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Kerber was broken in the final game of the first set to put Williams ahead. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Williams celebrates winning the first set in the Wimbledon final against Angelique Kerber. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Kerber had the chance to break Williams in the second set but saw the opportunity slip. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Williams his the throttle afterwards and broke Kerber immediately. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Williams ended up on the floor when she rushed in towards the net but by now she was closing in on victory. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Williams finally clinched a 7-5, 6-3 victory to spark her celebrations. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Williams celebrates winning the Wimbledon women's singles title after defeating Kerber. Getty Wimbledon 2016 final weekend in pictures Williams lifts the Wimbledon women's singles trophy for the seventh time. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Williams equals Steffi Graf's record of 22 Grand Slam victories in the Open era. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber Williams and Kerber pose together with their trophies after the match. Getty Wimbledon 2016 final weekend in pictures Serena Williams vs Angelique Kerber The pair have a good relationship and both admitted it was an honour to play each other in the final. Getty

Williams, who won her seventh Wimbledon singles title last year, announced herself and Ohanian were expecting their first child together last month.

The tennis player added the latest of her 37 major titles at the Australian Open, beating sister Venus to the singles title in January. The 35-year-old was expecting at the time.

Williams announced she was engaged to Ohanian at the end of last year. Sharing a poem on a Reddit thread explicitly created for people to share their engagement stories, Williams told of how Ohanian had whisked her off to Rome, where they first met, to propose.

The 34-year-old, who is the executive chairman of Reddit, shared Williams’s post alongside the message: “she said yes”.