“Mother’s Day looking a little different this year!”

Flanked by herParenthoodcostarsLauren GrahamandMiles Heizer, the actress revealed that she is pregnant with apost on Instagramon Sunday.

Mae Whitman/Instagram

“Not to make aParenthoodepisode out of it or anything but!!!

Lauren Graham and Mae Whitman

Clockwise from top: Lauren Graham, Miles Heizer, and Mae Whitman.Mae Whitman/Instagram

Mothers Day looking a little different this year!”

“Cant wait to meet you, huge baby kicking my insides to filth!

For six seasons, Whitman played Amber Holt onParenthood, loosely based on the 1989Ron Howardfilm starringSteve MartinandMary Steenburgen.

Lauren Graham and Mae Whitman arrive at the Netflix “Gilmore Girls: A Year In The Life” For Your Consideration Event at the Netflix FYSee Space on May 11, 2017

Lauren Graham and Mae Whitman.Amanda Edwards/WireImage

Now, with life imitating art, Graham is here for Whitman’s own pregnancy.

Whitman’sGood GirlscostarChristina Hendrickscommented on her post, writing, “Im so happy for you.”

Ahhhhhhh!!!!!”

Porter had a cameo in theParenthoodseries finale as Amber’s future love interest.

“And we didnt have time for that, unfortunately, but I think it still sort of lands.