i would like to know how to purchase a dress by david dalrymple.it was
featured in the last episode of sex in he city by sarah jessica
parker. it is from the house of field's collection and it is a powder
puff pink "bubble" dress

David Dalrymple is a designer for Patricia Field's "House of Field"
line, and quite a few of the "Sex and the City" fashions can be
ordered through the House of Field website, here:

http://www.patriciafield.com/Merchant/intropage.html

David Dalrymple has his own section:

http://www.patriciafield.com/Merchant/davidd.html

Unfortunately, I didn't see anything on the site that resembled your
description. Perhaps the dress will be released for sale at a later
date.