Lizzie Grubman Gives Birth to Baby Boy

Celebrity publicist Lizzie Grubman gave birth to a baby boy, Harrison Irving Stern, on Tuesday in New York City, PEOPLE has confirmed.

Grubman, 35, and husband Chris Stern, 36, welcomed the 8 lb., 10 oz. baby (whom they plan to call “Harry”) at 7:45 a.m. at Lenox Hill Hospital.

“Lizzie is feeling great. She’s really excited,” says Grubman’s spokeswoman, Sabrina Levine. “He’s a big, sturdy, healthy, adorable kid. He’s great.”

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Jail Day for Publicist Lizzie Grubman

Onetime publicist to such stars as Britney Spears and Jay-Z, Elizabeth S. Grubman – Lizzie to all, especially tabloid headline writers – is due to enter jail for at least 60 days on Wednesday.

The New York Times notes that she has given up smoking, taken up kick-boxing and swapped her Seven jeans for sweatsuits and sneakers.

Her incarceration, in the Suffolk County Court in Riverhead, N.Y., comes as punishment after having backed her father’s black Mercedes SUV into a crowd of Hamptons club-goers in July of last year.