It was a family affair for Travis Scott's 27th birthday bash Thursday night -- the whole family gathered to celebrate the rapper's big day, including his daughter Stormi and "wifey" Kylie Jenner, of course. The whole clan dressed in Avengers-themed colors -- Stormi accessorizing with a superhero cape :)

We're gonna agree that Kourtney isn't the most interesting to look at -- her all-black outfit with athletic top and wide-leg trousers and her mom Kris' matching all-black look weren't the most creative. Khloe had on a beanie and trench coat. And guess what! The denim mogul actually called more paparazzi to come and take pix once she spotted our shooter in the theater parking lot. Ha!

Meanwhile Kim's look was pretty interesting -- sausage casing PVC pants with a crop top. The reality star sucked on a red Twizzler that matched.



Given Kylie's previous Instagrams of her and Travis dressed in Avengers costumes weren't prettttttyyyy sure the fam was paid by Marvel and Disney Studios to promote the big-budget film. Right??