World Cup’s sexiest fan Ivana Knoll poses in skin-tight outfit at Floyd Mayweather’s fight with Aaron Chalmers in London

IVANA Knoll, who was labelled as the World Cup's sexiest fan, was pictured ringside at Floyd Mayweather's exhibition fight last night.

The Croatian influencer wore a brown jumpsuit as she posed for a snap at the O2 Arena in London ahead of the bout.

She later posted the picture on Instagram, asking her 3.5million followers: "Are you watching boxing tonight?"

Ivana was among the very sparse crowd at the 20,000-capacity O2 Arena.

Thousands of tickets for the event were left unsold meaning that large sections of the arena were left closed.

Mayweather, who was making his debut on UK soil, took on former reality TV star Aaron Chalmers.

The boxing legend dominated his opponent, who was making just his second appearance in the ring.

He eased through all eight rounds, but no official result was announced due to the nature of the fight.

Mayweather was joined by a large group of friends, including Ivana, when he celebrated his 46th birthday in London earlier this week.

Ivana shared plenty of snaps and videos from the event on her Instagram.

The 30-year-old also left fans stunned after she posted a series of pictures at the BAFTAs afterparty last week.

After the fight on Saturday, Mayweather was quick to praise Chalmers as well as the fans in attendance.

He said: "This guy is tough as nails, I came over to the UK to entertain the people.

"We had fun for eight rounds and I’m glad that I came. What he has to do is work hard and believe in his skills, because he’s got a good chin and he’s a tough competitor.

"I want to thank all the fans in the UK, it’s unbelievable. It’s up to the fans, if the fans want me to come back then I will come back."