Country crooner Maren Morris and R&B belter Tinashe were among the five headliners performing at SHEIN Together Fest, which livestreamed Sunday at 2pm PST via the SHEIN app.
The 31-year-old Grammy winner dressed her post-baby body in a crochet halter, black pencil skirt, and white gladiator heels from the fast fashion e-commerce platform founded in 2008.
'I feel like I probably wear more high-waisted stuff now, but I definitely also - after my son,' Maren admitted to People last Friday.
'#SHEINpartners': Country crooner Maren Morris (L) and R&B belter Tinashe (R) were among the five headliners performing at SHEIN Together Fest, which livestreamed Sunday at 2pm PST via the SHEIN app