50yrs old Italian millionaire Gianluca Vacchi, shows off his jaw-dropping physique in tiny white Speedos as he takes a dip with Brazilian model on Miami Beach (Details, pics)

He may have recently turned 50 years old, but Gianluca Vacchi is in the best shape of his life.

Hitting the Miami beach in tiny white Speedos on Saturday, the Instagram sensation looked proud to parade his shirtless physique in front of onlookers.

He even upstaged beautiful Brazilian model Julia Pereira, who made five outfits changes in his company. Heavily inked Gianluca was a sight for sores eyes in his low-rise swimming trunks that left very little to the imagination after a dip in the sea.

The hunk wore colourful jewellery on his ankle and wrist to offset his many inkings and displayed a bright bleached blonde to his swept back hair.

Instagram playboy Gianluca was pictured during an interview with Julia, the host of Brazilian network RedeTV - for which Gian wrapped on a red silk robe.

Vacchi, who has more than 11 million followers on Instagram, has emerged as a social media star, showing off his lavish lifestyle on yachts, planes and beaches. He's been seen enjoying the good life with a number of celeb pals, including Zac Efron, Cristiano Ronaldo and Luis Fonsi.

Flawless Brazilian model Julia was snapped on the beach in Florida modeling an assortment of stunning swimsuits that well complemented her statuesque form.

'Good morning Miami!!!' the 30-year-old stunner wrote on her Instagram account, which boasts more than 34,000 followers. 'Finally a day off to enjoy the beach!!!'

The 5ft9 beauty showed off her fit form in a number of sizzling suits, including a cerulean blue two-piece with yellow ruffles, wearing a lacy white beach kimono over it.

She also wore a patterned navy blue two-piece with yellow ruffles, a blue patterned one-piece with a large white hat, a purple two-piece, a white two-piece with horizontal black stripes and a lemon yellow one-piece.