Have you heard about Maren Morris's new all-girl group??

We're now know who the final member of The Highwomen is.

If you're not familiar with the name, it's the all-female supergroup that Brandi Carlile and Amanda Shires spoke about forming last month. Shires is a longtime solo artist who's married to Jason Isbell and plays fiddle in his group the 400 Unit. At first, she revealed in an interview that the third member would be Margo Price, but she quickly recanted that -- because, according to a story in on Wednesday, it turns out it's actually Maren Morris.

Carlile posted a photo of the trio on social media yesterday. So did Isbell, who snapped the shot of them in the studio with producer Dave Cobb and captioned it, "Fun at work." The group reportedly intends to lean more country than Carlile does on her her own albums.