Marsha Thomason's publicist says the British actress has given birth to her first child, a daughter named Tallulah Anais, in New York.
The baby weighed 8 pounds, 12 ounces when she was born June 12.
Thomason is known for her roles in the TV shows "White Collar," "Las Vegas" and "Lost."
She married Sykes in April 2009.
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