Black Swan Rainbow Sundress with tie top

Black Swan Rainbow Sundress with tie top. Super soft, flowing, summertime dress from Apricot Lane Boutique. Zip back for easy entry. Tie / tank top sleeves for adjusted fit. It's alil big for me- I have it pulled tight w a clip on the back to show how it should n would correctly fit a diff size in my pic. A little too big on my chest still, as you can maybe see. Would best fit a size 2-4, it seems. Material is thin and soft but Can't see bra. Open to offers & questions. Thanks for looking.