John Mayer poses with Serena Williams at the Audemars Piguet Starwheel Launch Event

John Mayer and Serena Williams were just two of the many stars who descended on Miami’s Art Basel for the launch of Audemars Piguet’s new Starwheel watch.

Mayer, 45, who made headlines for having dinner with 22-year-old Kiernan Shipka earlier this month, was all smiles posing with the 41-year-old tennis legend.

Mayer also posed with Audemars Piguet Americas CEO Ginny Wright and Williams at the Miami event for the new Code 11.59 Starwheel watch, which retails for $57,900.

Mayer stepped out with a plain white-t-shirt under a brown suede button-up shirt for the event.

He completed his look with brown pants and dark brown leather boots for the annual Miami event. 

The clean-shaven singer had his sleeves slightly rolled up to reveal his small flower blossom tattoo on his right wrist.

John’s look: Mayer stepped out with a plain white-t-shirt under a brown suede button-up shirt for the event

Williams stepped out in a black long-sleeved halter top that barely exposed her toned midriff.

She also opted for a black miniskirt while accessorizing with diamond strand earrings and a stylish gold watch.

The tennis legend completed her look with a pair of tan platform pumps for the Miami bash. 

Serena’s look: Williams stepped out in a black long-sleeved halter top that barely exposed her toned midriff

Mayer also posed with Audemars Pigut CEO François-Henry Bennahmias and Benjamin Clymer, founder of the luxury watch/lifestyle website Hodinkee.

The new Audemars Piguet Code 11.59 Starwheel is based on a timekeeping system known as ‘wandering hours,’ which was first developed for Pope Alexander VII in 1655.

The Pope was said to be ‘aggravated’ by the ticking clock and tasked watchmakers The Campani Brothers to construct a silent ‘night clock’ he could read in the dark, according to Forbes, a concept that has been refined by Audemars Piguet for this new $57,900 timepiece.

Francois, John and Benjamin: Mayer also posed with Audemars Pigut CEO François-Henry Bennahmias and Benjamin Clymer, founder of the luxury watch/lifestyle website Hodinkee

Williams also posed with Wright and Bennahmias at the Art Basel event.

Mayer, who released his eighth studio album Sob Rock last year, will play Alice in Winterland this Friday in San Jose, CA, with One Republic and Matt Nathanson.

He will also hit the road next year with The Grateful Dead for Dead and Company – The Final Tour, which kicks off at the Kia Forum in Los Angeles on May 19.

Williams announced her retirement from tennis in September after a legendary career, and had a brief cameo as herself in Glass Onion: A Knives Out Mystery. 

Serena: Williams also posed with Wright and Bennahmias at the Art Basel event