Costume designer, Patricia Fields, can be seen at the book release party. She is sitting at the bar.
In a rare repeat of a clothing item, when Enid is eating lunch with Carrie, she is wearing the same necklace seen on Samantha when she is having dinner with Richard in 4.2 Unoriginal Sin.
At 1:32 in Samantha is wearing the canary diamond ring that Richard gave her on her left middle finger. Samantha is seen in S5 Episode 3 giving that ring back to Richard In Atlantic City when she breaks up with him again.