Speaking of blowing things, Khloe is reeeeally going to town on that sucker! Perhaps she's practicing for later?

On Wednesday Khloe Kardashian and beau James Harden celebrated his 26th birthday at Pinz bowling alley in Studio City, and the night before that she threw him an epic bash on a yacht in Marina Del Rey. Khloe hired celebrity party planner Sharon Sacks, and more than 200 people showed up, including Kim Kardashian and her husband Kanye West, sister Kourtney Kardashian, half-sisters Kendall and Kylie Jenner, Kylie's boyfriend Tyga and Kris Jenner. Interestingly enough, Yeezy's ex-girlfriend Amber Rose was there too.

Guests were treated to a glass of champagne immediately after they arrived, and the all-white dress code was strictly enforced. Around midnight there were fireworks, and everyone sang to the bday boy shortly thereafter. Things with Khloe and James have been heating up over the last few months, but after this, it seems like this relationship is getting pretty serious!