Lennox Page Ali, whose father is musician Russell Ali, was born Tuesday at Cedars-Sinai Medical Center, weighing in at 5 pounds, 15 ounces, family spokeswoman Heidi Schaeffer said.

"Mother and child are doing very well and grandparents Heidi and Erik Murkoff are ecstatic," gushed Schaeffer.

Heidi Murkoff was pregnant with Emma when she wrote the proposal for her book, which sparked a franchise of pregnancy and parenting manuals. "What to Expect" has more than 17 million copies in print.

Bing has been blogging her pregnancy experiences, along with fashion and beauty advice, for her fellow millennial moms on Whattoexpect.com.

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