Someone didn't score an invite to the hottest party in town, and she's pissed!

Caitlyn Jenner headed out to grab coffee in Malibu this morning, and the reality star was in quite the sour mood! It's not surprising that she's glum over not being invited to stepdaughter Khloe Kardashian's birthday at Dave & Busters in Hollywood last night, but it's kind of her own fault!

The I Am Cait star hasn't made a huge effort to mend her relationship with the 32-year-old b-day girl since their fallout following her transition, and she was the only member of the Kar-Jenner clan that didn't send Khloe birthday wishes on social media.

Another person feeling the freeze? Lamar Odom! The Kocktails with Khloe host had originally planned to invite her former hubby, but after his repeated relapses with booze, she has finally given up trying to save him and filed for divorce.

If you think about it, the Kardashian men - and Caitlyn! - have really not done themselves any favors with the ladies. Scott cheated, Lamar cheated and overdosed, Tyga cheated, Rob knocked up their arch nemesis, and Caitlyn well... she left Kris after 22 years of marriage and didn't tell her about her plans to become a woman!