New actors and an actress have joined the cast of Downton Abbey as the adorable children of Branson and Lady Mary.

ITV announced via Downton Abbey’s official Facebook page that Oliver and Zac Barker will play Master George Crawley (son of Lady Mary and the late Matthew), while Fifi Hart has been cast as Miss Sybbie Branson (daughter of Branson and the late Lady Sybil).

Photos of the two children were included with the Facebook post:

The characters have been recast so they can have toddler roles during series 5. Presumably they’ll have a handful of speaking lines throughout the new series.

We think they did a great job in casting these updated roles. At least for now you can really see the physical traits they received from their fictional parents (like Master George’s hair).

Downton Abbey series 5 begins this September on ITV. Americans will have to wait until January to watch the new series on PBS.