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While we try (and fail) to remain as calm as possible about the arrival of Prince Harry and Meghan Markle’s son, it appears we aren’t the only ones who were counting down the days. In fact, Twitter has blown up with thoughts about the child’s birth, with everyone from Prince Andrew to Oscar de la Renta congratulating the new parents on their newest addition.

Keep reading for all the best celeb reactions to Baby Sussex’s arrival.

1. The Royal Family

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2. Prince Andrew

3. Billie Jean King

4. Oscar de la Renta

5. Wendy Williams

6. Patrick J. Adams

7. Michelle Obama

8. Ellen DeGeneres

9. Ryan Seacrest

10. Whitney Cummings

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