The 31-year-old also shared a hilarious picture of Chris looking pregnant in a stuffed shirt as she hugged him from behind.
The news comes just six months after Melissa and the former Vampire Diaries star tied the knot in a private ceremony held at an estate in Ojai, California.
Melissa was previously married to her former Glee co-star Blake Jenner. The former couple secretly wed in March 2015, finalising their divorce in December 2017 after splitting the year prior.
In November 2019, Benoist made the choice to share a personal domestic violence story with her Instagram followers. “I am a survivor of domestic violence or IPV (intimate partner violence), which is something I never in my life expected I would say, let alone be broadcasting into the ether,” she said at the time.