I just bought mine this past Saturday!
Several sorors from the three Atlanta area graduate chapters all met to buy stamps and take pictures at a local post office. It just so happens that a soror invited us to buy the stamps from the post office she works in. It was a bluetiful occasion with sorors, young and "seasoned".
One of the postal workers politely informed us that we had to step after we took pictures. A "seasoned" soror told him, "Where's the music? Bring it on!" LOL
I love my sorors!