Meghan Markle and Prince Harry attend Tyler Perry's star-studded birthday bash with Oprah Winfrey

The Duke and Duchess of Sussex were in great spirits, with Meghan, 43, grinning and giggling next to her husband, 40, in the backseat of a black Range Rover.

Meghan's outfit was not visible through the car window, however, Harry was pictured in a grey suit.

The duchess appeared to be wearing her diamond engagement ring and her wedding band.

In addition, she pulled her long brown locks back into a ponytail.

The Duke and Duchess of Sussex spent hours partying with their close pal Tyler, who famously let the pair stay in his Santa Barbara home when they first moved to the US.

They also partied with talk show hosts Oprah Winfrey and Gayle King, singer Alicia Keys, and actor Aaron O’Connell.

Also at the party was Paramount CEO Brian Robbins and his wife, Tracy, who are close friends and neighbours of Meghan and Harry's.

A worker from a nearby lighting company told The Daily Mail there was "a lot of music, dancing, and singing".

He added: "Lots of speeches and food too. Everyone was having a lot of fun. It was a good party. There were a lot of famous people but I cannot say any more."

The worker also said a "male person who sounded like Harry was heard making a speech" during the celebration.

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Harry and Meghan arrived at 7pm and stayed for roughly four hours before leaving a little after 11pm.

They were driven by a professional driver and accompanied by a security detail, as well as an unknown friend.

The party, which was held inside a six-bedroom, eight-bathroom mansion in Montecito, occurred one day after Tyler's 55th birthday, and one day before the Duke of Sussex's 40th birthday.