Jacob one shoulder bow sleeve red formal dress vintage size 0

This dress is from a brand called Jacob, and I think it is vintage. The tag says size 0, but it fits me and I typically wear a size 2/4. I am 5'6 and this dress hits my knees. MEASUREMENTS: Sleeve: 8" Shoulders: 11" approx Bust: 15" Length: 37" tags: formal, formal wear, business, Christmas, graduation, classy, classic, red, Peggy Carter, vintage, bombshell, bow, one shoulder, party, cocktail, '50s, '40s