"Mom and baby are doing well!" Jason Weinberg, Thurman's manager, said in a statement. Weinberg did not reveal any other details, but celebrity news publication Us Weekly said the baby was born on Sunday.

The baby is Thurman's first child with partner financier Arpad Busson. Thurman has a 14-year-old daughter, Maya, and a 10-year-old son, Levon, with her ex-husband, actor Ethan Hawke.

Thurman, 42, and Busson, 49, have been dating on and off since 2007, including a brief engagement. The couple reunited earlier this year and Thurman announced she was expecting their child in February.

The actress most recently appeared on the hit musical television show, "Smash."

(Reporting By Piya Sinha-Roy; Editing by Bob Tourtellotte and Paul Simao)

• A Permanent Economic Emergency