Elizabeth and James Rex Sequin Blazer, XS

Like new sparkly deep blue and black blazer from Elizabeth & James. Bought preowned but haven’t worn. Size and fabric tag is missing. I was told it’s a size 6 but there’s no way. :) I have a size 2 already in gray and wanted a larger size. This fits the same as my size 2. So I believe it’s either a 2 or a small/snug size 4. It’s in excellent condition though. Sequins are in great shape. Beautiful statement blazer. Fully lined with light padding in the shoulders (doesn’t look too padded though). Single button in front. The lapel and body are black and the sequins are a dark blue. Could almost pass for black. The lapel also has a shimmer to it. Approx measurements Pit to pit 17” Shoulder 15”