The singer, 49, fresh from her 11-hit medley at the awards, danced on her hunky baseball player beau, 43, as they revelled in her success.

The On The Floor hitmaker, flaunted her fabulous figure in a plunging blue, white and gold printed jumpsuit.

The daring outfit flashed her braless assets while cinching in at her toned waist with a leather belt as she pulled off some dance moves on her handsome boyfriend.

Her blonde tresses were styled sleek and straight while her pretty features were enhanced with a glowing palette of make-up.

A-Rod changed into a fitted black suit for the night of celebration with J-Lo before locking lips with his beautiful partner as they checked out memorabilia from her career.

Alex proved to be his girlfriend’s biggest fan as he proudly watched her take to the stage at  Radio City Music Hall in New York City earlier in the evening.

The star was seen applauding and cheering his singer love on from the crowd, where he put on an adorable display with her son Max, ten.

The former baseball player, who put on a dapper display in a fitted white shirt and maroon suit couldn’t contain his joy after the On The Floor hitmaker completed an 11-hit medley, clad in an array of dazzling outfits.

Showing off his close bond with J-Lo’s family, he held Max’s hand and fist-pumped as the pair celebrated the showstopping performance.

Jennifer was age-defying when she performed an 11-hit medley starting with Waiting For Tonight and finishing off her performance with her latest track, which won Best Collaboration, Dinero.

A performance that was up to the standards of a Superbowl spectacular, saw her end with a moving speech which she dedicated to her twins, Alex and her twins.

‘It has been an incredible journey of dreaming my wildest dreams and then kind of watching them come true,’ she said.

‘This career has always been kind of an obsession for me. When people said, “You’re doing too much. You can only do one thing”, I always had it in my mind… I was always the kind of person who said, “Why not?”.

Jennifer continued to explain how her life changed when she welcomed twins Emme and Maximilian.

‘It wasn’t until I had two little angels come into my life that everything changed,’ she said.

‘I knew I had to be better. I knew I had to be stronger than I had before. I stand here stronger and better than ever.’

While Emme was seated on Jennifer’s mom Guadalupe Rodríguez’ lap, Max sat on the lap of her boyfriend Alex , who she called her ‘twin soul’.

‘And Alex. You’re like my twin soul,’ she gushed.

‘We’re like mirror images of each other. My life is sweeter and better with you in it because you make me realize that every day the sky is not the limit – the universe is infinite, and so is what we can accomplish together with love and trust and understanding.’

‘There’s so much more to do, to experience, and there is no one I’d rather do it with. You’re my macho baby I love you.’

The pair were later seen packing on the PDA at Jennifer’s star-studded after-party at NYC hotspot Beauty & Essex.

The couple locked lips before posing up for a series of sweet snaps in the VIP area.