SheIn offers the SheIn Women's Contrast Long Sleeve Lace Trim Skater Dress in Black/White for $19.76 with free shipping. That's $17 off and the lowest total price we could find, although we saw it for $5 less a month ago. It's available in sizes S to XL.

Note: Uncheck "Add Shipping Insurance to your order" during checkout to remove the 99-cent fee. This item ships from mainland China and should arrive in three to four weeks.