It seems silly to create a new thread every time we find a new J Crew $20 off $80 coupon code, so I'll just keep adding them here.
J Crew Coupons:
24HOURS - 30% Off $125+ Purchase (Exp. 9/1)
J. Crew Factory Coupons:
LABORDAY - 40 - 60% Off Sitewide + Free Shipping (Exp. 9/1)
Don't forget to place your order on the "catalog phone" available in most J Crew b&m's to get free shipping too.