Fullbeauty offers the Ellos Women's Polka Dot A-line Knit Dress in Black White Dot or Navy Dot for $34.99. Coupon code "FBOYC2016" cuts it to $20.99. With $7.99 for shipping, that's $29 off and the lowest total price we could find. It's available in sizes L and XL. Deal ends February 29.
Note: It's available in sizes XXL to 5XL for $23.99 plus $7.99 for shipping via the same code as above.