The tennis player met the King and received an award.
At an investiture ceremony at Windsor Castle, the 20-year-old was honoured for his services to tennis.
She won the US Open at the age of 18.
She became the first British woman to win a Grand Slam singles title in over 30 years.
She beamed as she posed for photos after meeting the King.
She said in a statement that it was great to receive her honor from the king.
"I think it's great to see a young person who has achieved success, and I think now she faces that incredibly challenging situation of dealing with that," said the Labour MP, who was awarded a Damehood at the same ceremony.
I think it's great to see young people being praised and being rewarded, and I think we should give every young person the opportunities so that they can develop their talents to the full.
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