Through May 31st, hop on over to J. Crew Factory where you can score an additional 60% off clearance prices when you use promo code BIGWINS at checkout.
Even better, you can score an extra 15% off your order when you sign up for J. Crew Factory emails. Note that a pop-up should appear when you head to the site. Just enter your email and you should see the discount code at the bottom of the page. Note that it will not be emailed to you.