Khloé Kardashian Wasn't At North West's Birthday Party Because She Was Too Sad About Jamie Sangouthai's Death

It was a family affair on Monday for North West's Disneyland birthday celebration, but we couldn't help but notice one of her aunties was missing.

While Kanye West and Kim Kardashian West brought their two-year-old to the happiest place on Earth for her big day, Khloé Kardashian opted out.

Sources say the 30-year-old passed on the magical day because she was still reeling from the sudden loss of ex Lamar Odom's best friend Jamie Sangouthai. continue story after the cut

[ Related: Khloé Is Worried Lamar Will Get Back Into Drugs ]

The 37-year-old passed away from a drug overdose, and the insider says that's why Khloé was too sad to go to Disney with her family. The source explained:

"Khloé was too upset over Jamie dying. She wasn't there."

When she found out the devastating news on Sunday, the heartbroken reality star took to Twitter to share her sadness:

story credit;; perezhilton