It looks like they're out of the 4T; they do have 5T and a few smaller sizes however. I apologize that it's not in stock but it's being sold by a 3rd party - a SYW partner, Old Navy.
I hope that helps! If you need help in the future, I can help you find coupons, discover lower prices and answer product questions! You'll also receive a welcome email with a coupon for $5 back in points on your next $25 purchase at Sears or Kmart. Click this link: syw.co/sywmakobi
then click on "Become a Client" button. I look forward to being your Personal Shopper!