Last week, Marissa Mayer, best-known as Yahoo’s CEO (one of the most-well known female CEOs in tech, if not the world), announced that she’s pregnant with twin girls. She made the announcement in a way befitting her industry: on Yahoo’s Tumblr.

The twins will be the second and third children for Mayer and her husband, Zachary Bogue. Mayer gave birth to her first child, her son Macallister, in September 2012. (That year was a momentous one for her: She became CEO of Yahoo earlier in July.) Mayer announced her pregnancy the same day that Yahoo announced her as their new CEO.

Mayer has said she’ll work through her pregnancy before her due date in December. She also worked through most of her first pregnancy.

After her son’s birth, Mayer famously didn’t take a break for maternity leave, returning to work only two week after giving birth. She also installed a nursery right next door to her office.

It’ll be interesting to see if having to care for two babies at once slows her down at all, and if she changes her views on feminism and working from home.