The context of the following conversation is Addison got a new apartment and was inviting guests over. Skylar helped change Addison's place to look better.:
Addison says Friends are coming over to my apartment.  Skylar helped me decorate it so it looks more inviting..
The friend responds Are you having a house warming?.
Addison responds Something like that.  There'll be wine and beer and food that my sister, the chef, is preparing..
The friend responds Am I invited?.
Addison responds or course you are..
The friend responds Your sister is the best chef..