"Santa's Secret Stuff" is the Christmas episode of Gilmore Girls, originally aired on The CW as the eleventh episode of the show's seventh and final season.
Lorelai and Christopher decide to put their Christmas holidays on hold while Rory is in London over the holidays. Once Rory returns to Stars Hollow, they decorate several Christmas trees, do their shopping and even bake Christmas cookies for the first time as a family. Turning up unexpectedly at the inn, Luke asks Lorelai to write a character recommendation letter for his custody battle over April. Lorelai struggles to write the letter until she and Rory run into Luke and April at the mall, and Lorelai suddenly remembers how important Luke has always been in Rory's life. Inspired, Lorelai writes the letter and mails it to Luke's attorney. Rory decides she will write an apology letter to her friend Lucy, explaining why she and Marty kept their past friendship a secret.