By Jody Thompson
Scroll down to see the official video for On The Floor...
Saucy: Jennifer Lopez flashed her bra and brandished her bottom in a tight sparkly catsuit on So You Think You Can Dance tonight
It wasn't only the finalists who were left breathless on the So You Think You Can Dance live final on BBC1 tonight.
Viewers at home were left gasping when Jennifer Lopez gave a sizzling live performance in a glittery catsuit that was so lowcut is showed off her bra - and so tight it revealed every inch of her famous rear.
The 41-year-old star was performing her recent No. 1 single On The Floor on the show, ahead of her appearance tomorrow on the bill at Capital Radio's Summertime Ball.
Hot mama: The mother-of-two was performing her recent No. 1 hit single On The Floor
Curvy: J-Lo's backing dancers couldn't keep their eyes off her incredible figure
To a standing ovation from judges Sisco Gomez, Louise Redknapp, Nigel Lythgoe and Arlene Phillips, host Cat Deeley was almost speechless before paying tribute to the star's performance with a simple: 'The one and only Jennifer Lopez!'
Cat didn't too badly herself in the style stakes, wearing a tiny tight sequined red mini dress.
The winner of the show meanwhile was tap dancer Matt Flint, who landed the £50,000 prize and the chance to dance onstage in Hollywood.
Jenny from the block: The star made her entrance being lowered down onto the stage in a giant illuminated heart
He had managed to stay out of the bottom two throughout the show.
Having been told the result from Cat, all he could exclaim was: 'I just feel amazing, it's amazing!
'I'm speechless. It's been the best thing I've ever done in my life.'
Glittering: Jennifer's spangly catsuit blended in with the bling on the So You Think You Can Dance set
Nigel however was more verbose on just how good a winner he was.
He said: 'It's going to be a delight for me to take Matt to Hollywood and see him dance there. He's got great character, great style, he's going to fit right in.'
Officially named Britain's Favourite Dancer, he was then carried aloft on the shoulders of his fellow finalists before they threw him in the air.
The show has been running for the past eight weeks and saw 20 dancers whittled down to a final four.
Making a point: The star was in incredible shape for her appearance on the live final of the show
Star spangled mama: Jennifer was down on her knees as she gave the performance her all
Officially named Britian's Favourite Dancer, he was then carried aloft on the shoulders of his fellow finalists before they threw him in the air.
It was revealed earlier this week however that it could be the last outing for the show.
Despite being a huge success in the States - where it has made a star of Cat in America - it's rumoured that BBC will not bring it back next year after disappointing ratings this time round.
Last week, despite being the semi-final, ratings fell under three million when the show clashed with the England versus Switzerland football match on ITV1.
Bit breezy: The star waved to fans - and showed off her bra again - as she left her London hotel on the way to the BBC
Sneaking out the back door: The star was wearing an all-black ensemble and sunglasses
Yummy mummy: The star, seen here with daughter Emme, leaving a London dance studio after rehearsals yesterday