Liv Tyler Puts Growing Bump on Display While "Cooking Up" Next Collection with Belstaff

British luxury brand Belstaff and actress Liv Tyler are teaming up once again to design the expectant mother's second collaborative collection. On Monday, a very pregnant Tyler was busy at work designing the line when she and Delphine Ninous, Belstaff's vice president of women's design, turned to the side to show off their growing baby bumps. The end result? A ridiculously adorable Insta (below) in which the dynamic design duo each look perfectly pregnant in matching black maternity outfits.

Tyler captioned the photo, saying "Momma's at work. Growing babies and designing for Belstaff. Soooo fun!!!!!" Clearly, the mama-to-be (for the third time) isn't feeling too exhausted just yet by her progressing pregnancy. Instead, she's still hard at work, creating what will no doubt be another classic collection for Belstaff.

At home, the working mom to two sons, Milo, 11, and Sailor, 1, is showing no signs of slowing either. In a recent Instagram (below), Tyler caught her youngest son Sailor peeking out from behind closed curtains to catch a glimpse of the street. The doting mama captioned the precious pic: "What's going on out there Nyc ?!?!?"