Paris Jackson, how could you?!

The hippie-dippy, all-things-positive, alternative lifestyle, #FreeTheNipple FEMINIST invited Rihanna's abusive ex-boyfriend to her birthday party?! Seriously?! Was he the only single dude available to attend (mainly because no one else invites him to anything anymore)?

We're a bit disappointed that Paris invited Chris to her blowout birthday bash when he represents pretty much a ton of stuff she hates -- namely mistreatment of women. In fact, Brown helped Jackson blow out the candles on her cake?! Enough is enough, PJ!

The rapper flexed in his $350K custom Porsche Stinger GTR -- AS IF WE CARE that you have nice cars, Chris.

Other celebs like the Hollywood's hottest couple Paris Hilton and Chris Zylka (along with Paris' parents Kathy and Rick), Patrick Schwarzenegger, Ashlee Simpson and hubby Evan Ross, EJ Johnson (speaking of #FreeTheNipple) and more hit celeb hotspot Hyde for the big celebration.

So happy birthday, Paris -- we think you're awesome. We also think you deserve better company that Chris Brown ...