Patrick Roberts, the star in a vampire series, has his name heavily influenced from vampire movie star Robert Pattinson.
One of Jenny's "old clothing" is seen as she is throwing out her old wardrobe. It's the dress she wore to her guerrilla fashion show in There Might be Blood (2008).
The dress Lily holds up to Jenny and asks if it still fits is Jenny's school uniform from season 2. It looks similar to the dress she made when she quit working in Pret-a-Poor-J (2008). You can tell by the the upper part of the clothes. The school uniform has straps and the dress has pink on the sleeves as well as the bottom.