Vintage? Jazzercise Aerobics Tank Top alo 80s 90s

I bought this tank by alo for Jazzercise secondhand to wear to a 1980’s themed party, and it doesn’t fit because I lost weight. Not sure if it’s legit vintage but it works well if you want that look! It may show the most minor signs of wear but I feel it is “like new,” and I didn’t see any noteworthy flaws at all. Pink, purple, gray, black, very versatile. Shelf bra, CoolFit fabric, size M. Cute pink mesh insert above the chest. Limited sale time ‘til I change my mind & attempt altering it 😆