Jenner was already getting in the spirit two weeks ago when she took Stormi and her two nieces True Thompson and Dream Kardashian pumpkin-picking.
On Saturday night, Jenner impressed with her insane costume, dressed up as Madonna at the 2003 VMAs.
This was the year Madonna kissed Britney Spears and Christina Aguilera on stage, and Jenner even had her best friend Stassie Karanikolaou dressed as Britney Spears.
Jenner isn't only having fun dressing up her daughter. Last week, she put her three Italian greyhounds in Toy Story costumes. One was Woody, one was Buzz, and the other was Bo Peep.
In a video for Vogue, speaking about her Met Gala dress, Jenner said she never wanted to regret what she wears.
She said: "I don't want to look back at the look and say, 'I wish we did shorter hair,' or 'I wish we didn't do colored hair,' 'I wish we didn't do this.'
"I'm very hard at making final decisions because I see a lot of different visions. I just try not to stress myself out. I'm like, 'Alright, I'm just going with my gut. Hopefully, it works. I'm gonna own it.'"
