Kate's Reiss dress online... and selling out

The Reiss dress that Kate Middleton wore in an official engagement photo is available online today here.

We stopped by the Reiss store in Georgetown last night to see if any might be available (Yes, we thought we might try it on. We've already said we like Kate as much as the next girl does.) -- but were told the D.C. store would not have the Nannette dress in stock until Feb. 3.

As of this posting, the Reiss U.S. site is already sold out of sizes 0, 6, 8 and 10.