Lia goes with Diana & Charles to their annual meeting with Belinda Lacroix where she ends up dying in the bathroom in episode 4x04 “In the Pink”.
Everyone from the company attends Belinda Lacroix's funeral dressed in pink in episode 4x04 “In the Pink”.
Kate steps out of the party and makes eye contact with a dog with one eye and later Eleanor runs out in the confusion and tries to call Kate on the phone in episode 1x01 “Never Meet Your Heroes”.
Aladeen's bedroom scenes were filmed in one of the rooms at the New York Palace Hotel.
the Bass hotel where they live
Appears in “Much 'I Do' About Nothing”.
Source: I Am Not a Stalker