“Double the pleasure + Double the fun = Double the Babies,” she penned, adding a surprised face emoji.
Sarah's boyfriend Wells Adams commented on the photo saying, “These children don’t have nearly enough curly hair,” referencing the actress’ curly locks.
During the season 10 finale on Wednesday, Hayley gave birth to a boy and a girl.
Appearing on the Ellen DeGeneres Show in January, the 28-year-old actress opened up about the news that her character Haley Dunphy was expecting.
“I feel pregnant when I’m in the belly,” she admitted. “Today at work I went into crafting and I was like, ‘Oh, that donut looks really good.’ And then I had four donuts. I was like, ‘It’s fine! I’m eating for three.’ “