Royals Royal Reunion! Every Photo You Need to See of Meghan Markle and Kate Middleton's Palace Party Meghan Markle and Prince Harry joined Kate Middleton and Prince William for a special celebration in honor of Prince Charles at Buckingham Palace By Erin Hill Erin Hill Twitter Senior News Editor, PEOPLE People Editorial Guidelines Published on March 5, 2019 09:45 AM Share Tweet Pin Email Trending Videos Prince Harry and Meghan Markle. Photo: Dominic Lipinski/Pool via AP 01 of 18 PA Images/Sipa Meghan Markle and Prince Harry at the Buckingham Palace party, which was hosted by Queen Elizabeth to begin the 50th anniversary celebrations of Charles being invested as Prince of Wales. 02 of 18 Dominic Lipinski/Pool via AP Kate Middleton, in a pale green flowing dress, arrives at the party in honor of her father-in-law. 03 of 18 Kate Middleton. Press Association via AP Images Kate Middleton talks to guests at the palae receptions. 04 of 18 PA Images/Sipa Queen Elizabeth, Prince Charles and the rest of the royal family view regalia that the prince, then 20, wore for his investiture. 05 of 18 Prince Harry, Meghan Markle and Princess Anne. Dominic Lipinski/Pool via AP Harry and Meghan talk to Princess Anne at the bash. 06 of 18 Some of the items include the Investiture Coronet, Sword, Ring and Rod and the Letters Patent that his mother the Queen issued for the creation of Charles, Duke of Cornwall as Prince of Wales in 1958. 07 of 18 Dominic Lipinski - WPA Pool/Getty Images Camilla, Duchess of Cornwall speaks with Kelly Jones, lead singer of the Stereophonics, at the reception. 08 of 18 Dominic Lipinski/Pool via AP The man of the hour, Prince Charles, at his palace reception. 09 of 18 Prince Harry and Meghan Markle. Dominic Lipinski/Pool via AP Meghan cradles her baby bump as she takes in the palace reception. 10 of 18 Queen Elizabeth and British Prime Minister Theresa May. Dominic Lipinski - WPA Pool/Getty Images Queen Elizabeth and British Prime Minister Theresa May (both wore a royal shade of purple!) greet each other at the event. 11 of 18 Prince Harry wraps his arm around Meghan, who is expecting her first child in April. 12 of 18 Prince Charles. Dominic Lipinski - WPA Pool/Getty Images Prince Charles greets actor Owen Teale and singer Wynne Evans. 13 of 18 Dominic Lipinski - WPA Pool/Getty Images Meghan wore a metallic brocade dress for the occasion. 14 of 18 Dominic Lipinski - WPA Pool/Getty Images The Duke and Duchess of Sussex meet Simon Weston and Alun Cairn. 15 of 18 Meghan Markle. Press Association via AP Images Meghan was glowing in her recycled white Amanda Wakeley coat and nude heels. 16 of 18 Meghan Markle and Prince Harry. Press Association via AP Images Meghan and Harry were all smiles as they made their way around the room speaking to guests. 17 of 18 Meghan Markle, Prince Harry and Amy Pickerill. Press Association via AP Images The party marked the first joint event for Meghan and Harry since they returned from their recent two-day tour in Morocco. 18 of 18 Kate Middleton. Press Association via AP Images Kate speaks with guests at the palace party.