Fergus is all grown up in OutlanderSeason 3 — and he is super hot as an adult.

Starz officially announced on Monday that Cesar Domboy will be taking on the role of Jamie (Sam Heughan) and Claire's (Caitriona Balfe) adopted son all-grown-up in the new season. Domboy, a native Frenchman, previously appeared in Robert Zemeckis' The Walk and several French theater productions.

Fergus was played by the adorable Romann Berrux in Season 2, who wormed his way into fans' hearts with his mischievous ways and undying devotion to the Frasers. Season 3 will obviously involve a time-jump in the past-timeline and it seems that puberty went really, really well for the young squire, because now he looks like this.

Outlander: Jamie is bloody and beaten in first Season 3 photo

Cesar DomboyCesar Domboy

"I can't even explain how proud and excited I am about joining the #outlander family. Thanks to the Outlander's fans for all their greetings. I swear I'll do my best to be worthy of this amazing show playing Fergus. And worthy of your support too. Thanks guys," Domboy wrote on Instagram over the weekend when Entertainment Weeklyfirst broke the news of his casting.

Oh, he also has an Instagram where he posts photos like this:

You're welcome.

Domboy will be joined by Lauren Lyle, who was cast as Marsali for the upcoming season. Marsali is the daugter of Laoghaire (Nell Hudson), whose Season 1 crush on Jamie lead her to turn Claire into the authorities for being a witch.

Marsali, like her mother, has a "rebellious and romantic mind" that lead her to go after what she wants, no matter who stands in the way. In the books, she also has a romantic connection to Fergus.

Lauren LyleLauren Lyle

What do you think of the casting?

Outlander Season 3 returns in 2017 on Starz.