Marimekko print hand made shirt

Tank top shirt in Marimekko print fabric with sculpted trapeze hem Could be worn for maternity Hand made. Black fabric facing around the top, body is unlined. See pics of it inside out showing this. Seams are mix of infinished, zigzag stitched and pinked Unsized obviously Measures are Pit to pit= 18.5” 1/2 hem = 28” 1/2 armhole = 10 1/4” Unsure of content but it feels like cotton or linen