Prince Charles, his wife Camilla, Prince William and his wife Kate the Duchess of Cambridge made a rare joint appearance at the premiere.
Meghan Markle and her husband Prince Harry have signed a multi-year deal with Netflix last fall, with intentions to develop documentaries, docu-series, feature films and scripted shows among others.
Since Meghan and Harry relocated to California last year, it's unclear when the Queen will get to meet her 11th great-grandchild in person.
The women also plan to take part in a talk about early childhood education. The White House says it’s the first time they’ve met.
A photo of 39-year old Kate receiving the shot was posted on the Kensington Palace Twitter account on Saturday.
The brothers were seen chatting as they walked out of the chapel following their grandfather's funeral.
Harry was best man at William's wedding to Kate Middleton in 2011, and the announcement comes after the birth of William and Kate's third child on Monday.
Kate, the wife of Britain's Prince William, has given birth to a baby son, Kensington Palace announced Monday.