Fendi TShirt in bright green-fits like a small

This shirt was only Worn once and it was too tight for me. I held on thinking one day but am letting it go. Tag is half on. I didn’t want to sew it because it’s been this way from beginning. One owner - me! Purchased at Loehmanns. Measurements upon request - shirt says size 10 but it fits like a small although it is stretchy!