Follow CBSMIAMI.COM: Facebook | Twitter

LONDON (CBSMiami) — Prince Harry and Meghan Markle made their first public appearance as newlyweds Tuesday.

READ MORE: Three People Rescued From Giant Tank At Homestead Fish Farm

The couple attended Prince Charles’ 70th birthday celebration at Buckingham Palace, even though the heir to the throne doesn’t officially turn 70 until November.

The royal family likes to celebrate early and often and it is expected more celebrations will be planned over the next few months.

PIX: Meghan Markle In Full Duchess Mode At First Royal Engagement

The new duchess wore a pale pink-and-taupe silk-crepe Flavia dress from Goat with a matching custom Philip Treacy pink hat that showed off her perfectly polished side chignon. She accessorized her look with Tamara Mellon’s Siren pump in Blush, according to People.

READ MORE: CDC Investigating Ground Turkey Products After Salmonella Cases Surface

Meghan, Duchess of Sussex attends The Prince of Wales’ 70th Birthday Patronage Celebration held at Buckingham Palace on May 22, 2018 in London, England. (Photo by Chris Jackson/Chris Jackson/Getty Images)

Tuesday’s party, held in the gardens of Buckingham Palace, is highlighting the elder prince’s charity work.

The party also paid tribute to first responders of the terrorist attack at Ariana Grande’s Manchester concert in May 2017.

Nearly 6,000 guests attended.

The Duke and Duchess of Sussex got married on Saturday at Windsor Castle as millions around the world watched their nuptials.

Both stayed out of the public eye on Sunday.

MORE NEWS: World-Famous Artist Pharrell Williams Teams Up Nightlife King Dave Grutman To Bring Goodtime Hotel To Miami Beach

Their honeymoon destination has yet to be announced.