A photo posted by Liv Tyler (@misslivalittle) on
In the photo, Tyler lifts her shirt and reveals her bare bump as she and friend Frankie Rayder go for a stroll in Los Angeles.
Tyler captioned the photo, "LA afternoon walks with ma-baby and my frank #frankierayder."
The model appeared comfy in black leggings, a white t-shirt and a pair of Converse sneakers.
Once her new bundle of joy arrives, Tyler will be a mom of three; the actress is already mom to Milo, 11, with ex Royston Langdon, and Sailor, 1, with current boyfriend and sports agent Dave Gardner.