Yahoo Boss Marissa Mayer Gives Birth To Identical Twin Girls

But expect her to head back into the office soon.

Marissa Mayer announced the birth of her identical twin girls Thursday morning on Twitter and on her personal Tumblr.

"The twins are here!" the Yahoo CEO exclaimed. She confirmed that her family is doing well, as she thanked people for their support throughout her pregnancy.

Mayer announced in September that she plans to take "limited time away" and will work throughout her short maternity leave. "I’m extremely energized by and dedicated to both my family and Yahoo and will do all that is necessary and more to help both thrive," she wrote.

Tech companies like Yahoo are leading the charge on new favorable parental leave policies, but many U.S. companies are still lagging. Only 13 percent of full-time workers in the country were privy to paid family leave as of 2012, a Bureau of Labor Statistics study showed.

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