Nope; if you mean the lady in pink, who is not Princess Anne.
I finally found out who that lady in pink was, according to People magazine:
The Queen halted at the Sovereign’s entrance to introduce President Donald Trump to one of her ladies-in-waiting, who was born in America. The Countess of Airlie was born in Newport, New Jersey, in 1933.Her name is Virginia Fortune Ryan Ogilvy, and she married David Ogilvy, Earl of Airlie. She was appointed lady-in-waiting to Elizabeth II in 1973, and has accompanied the Queen when Elizabeth has visited the U.S., including a visit to the George W. Bush White House. She is 85 years old and is the mother of six sons and daughters.
The earlier lady I posted about was the wrong Ogilvy I'm trying to work that out—I think the two ladies are sisters-in-law, married to Ogilvy brothers.
