Coastal Chic sage green dress size medium with side slit

Beautiful Coastal Chic sage green dress spaghetti straps with slit. Closure is a side zipper color white to match the dress. Unfortunately, I can't get the lighting correct. The dress appears grey in the photos, but in person, this dress is a beautiful sage green. This was given as a gift from a boutique. However, the sizing was not right, and I do not know if it could be altered. This dress has not been worn and is brand new but no tags. Size: medium