Marissa Mayer, CEO of Yahoo, gave birth to identical twin girls on Thursday. She shared the news via social media a few hours after her daughters were born.

Zack and I are excited to announce that our identical twin girls were born early this morning. Our whole family is doing great! @zackbogue

— marissamayer (@marissamayer) December 10, 2015

Many congratulatory Tweets replied to Marissa Mayer’s announcement. She even received one from Sundar Pichai, the CEO of Google, where she used to work.

Yahoo CEO Marissa Mayer gives birth to twins https://t.co/Jrnn5FbHvJ pic.twitter.com/wtOtEetg1P

— Wall Street Journal (@WSJ) December 11, 2015

It was just this past September that Marissa Mayer announced her pregnancy.

Mayer joined Yahoo in 2012 to help the struggling company. To this date, however, it still remains significantly behind both Google and Facebook in advertising, as well as in other areas.

Congratulations, @marissamayer ! The @Yahoo CEO just welcomed twin daughters: https://t.co/r54fWYoSuC pic.twitter.com/1pH5YkzM9x

— Parents Magazine (@parentsmagazine) December 11, 2015

Despite the birth of her twins, Marissa Mayer doesn’t plan to take an extended maternity leave. Instead she says she will take a “limited” maternity leave and plans to work throughout. She and her husband have hired several people to care for their children. In addition to their twins, Marissa Mayer and Zachary Bogue are also the parents of a three-year-old son named Macallister.

Yahoo offers its employees up to eight weeks of paid leave when a child is born, adopted, or fostered. Birth mothers–like Marissa Mayer–receive an additional eight weeks.