DUSTIN JOHNSON was joined by Paulina Gretzky for the president's treatment on Halloween.

Former US President Donald Trump joined the golf star and his fiancée for a fancy dress party at Florida.

Paulina, 32 years old, looked stunning in her Baywatch Lifeguard costume for the Mar-a-Lago bash in Palm Beach.

Trump greeted her with a hug and kiss on the cheek, as well as a compliment: "You're great!"

Johnson, her 37-year-old partner, arrived dressed in a white polo shirt with white headband and a white polo shirt as a tennis player.

Paulina shared with her Instagram followers sneak peeks at the night's celebrations on her stories.

Trump, on the other hand, did not appear to be wearing fancy dress, but instead wore his presidential attire.

Johnson and Gretzky were joined at the end by Kristina Melnichenko and Jeremy Cohen, friends.

Cohen and Melnichenko also posted photos from the party to Instagram stories throughout the night.

Gretzky was the daughter of Wayne, a former Canadian ice hockey player, and was there cheering on the US team's victory in September at the Ryder Cup.

After DJ won his singles match at Whistling Straits against Paul Casey, Paulina gave DJ a hug and a kiss on the 18th green.

They have two children together, and they are now set to tie the knot after starting dating in 2013.