🔴Ladies size 10/12 purple button up shirt

La Redoute ladies 🚺 long-sleeved blouse is dark deep purple EUC 9.5/10 Worn a couple of times to the office and church a little too big on me now is it 10/12 or a medium on the tag and it fits true to size there are two pockets in the front and has a collar and the sleeves have double vertical buttons