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    Here's Everything We Know About Kourtney Kardashian's 40th Birthday Party

    Who doesn't love a butt cake?

    Kourtney Kardashian turned 40 yesterday and had her 40th birthday party at her mom Kris' house.

    Michael Loccisano / Wire Image

    Because this is my sad existence, I went through all of the Kardashian's Instagram accounts to give you an idea how really really rich people celebrate their 40th birthdays.

    Trading Spouses

    Enjoy!

    Trading Spouses

    First of all, gifts!

    Someone gave her, what I assume is an original, Mickey Mouse print from 1933.

    Someone else gave her a cake with her face on it.

    Someone else gave her cookies with her face on it.

    And someone else gave her three Mickey Mouse sculpture things.

    The cake was a naked Kourtney hanging off the edge of a bath tub.

    Here's another look:

    Honestly, I just really want to know who got to eat the Kourtney.

    Paris Hilton was there.

    Paris was practically begging Kim for a picture.

    Eventually she tackled her.

    The three sisters, were of course, also there.

    Instagram: @kimkardashian

    People made their entrances to these sparkler things.

    Kylie and Kendall were obviously there too.

    There were custom bottles of Don Julio tequila as party favors, every guest got one and you could engrave it with whatever you wanted.

    Kris Jenner got this engraved on hers:

    Oh yeah, because I know you're dying to know, Kim wore this:

    And here's Kourtney, the birthday girl:

    Sia, yes SIA, sang her happy birthday.

    Robin Thicke also sang her happy birthday but whatever.

    The napkins had iconic Kourtney sayings like "most interesting to look at."

    And my favorite: "Kim, there are people that are dying."

    Eventually the bathtub butt cake came out.

    And everyone danced the night away to the DJ assisted by someone playing the saxophone.

    In conclusion, here's another picture of the butt cake because I'm kind of obsessed.

    The end.

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