Maya and Michael are expecting! (Picture: Getty)

Pen15’s Maya Erskine and This Is Us actor Michael Angarano are expecting their first child—and used the news to urge Americans to vote in tomorrow’s presidential election.

Maya, 33, who plays a fictional version of her 13-year-old self in the Hulu comedy, shared her pregnancy snap on Instagram.

The brunette’s baby bump is clearly visible beneath her long-sleeved black shirt, paired with leopard print leggings. Michael, 32, is crouched in front of the camera in a white tee.

Maya’s caption reads: ‘When two becomes three. And please vote #bidenharris2020.’

It looks like the couple has kept their news well under wraps. Their celebrity friends were shocked, perhaps no one more so than Hunger Games star Jack Quaid who commented: ‘HOLY S**T WHAAAAAT?!?! Congrats you guys!!!’

Makeup artist Geeta Bass wrote: ‘What??? That’s so exciting!! Congratulations to you guys!’

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And Director Jeff Chan suggested a moniker for the bundle of joy: ‘Name it Jeff.’