At Khloe Kardashian’s birthday, Blac Chyna and Rob Kardashian look like guests of honor

Khloe Kardashian celebrated her 32nd birthday on Monday, but Blac Chyna’s the one who seems to have gotten the big gift at the party: acceptance.

Chyna, fiance Rob Kardashian and some of her future in-laws were all over her Instagram in pics from the carnival-themed celebration. Yes, Rob, the one who avoided cameras for what seemed like forever, was mugging it up in the photo booth and in a candid with his lady.

“Best birthday ever!!! Thank you to ALL who made it pure … magic. Thank you Lord!,� Khloe tweeted Tuesday.

The birthday girl, who reportedly kicked her little brother out of her house in January after he started hanging with Chyna, was all smiles in the photo booth with him and her future sister-in-law.

(According to a promo from an upcoming "Keeping Up With the Kardashians,� Khloe's loathing of the situation didn't exactly stop at the eviction. “No one should congratulate them� on their engagement, she tells Kim and Kris. "That's so desperate and fake of whoever does first because I know someone's gonna break.�)

Chyna hit the photo booth with Kim Kardashian too, and snapped a candid with momager Kris, boldly calling her future mother-in-law “Mama� in the caption.

Kim Kardashian revealed some of the party’s arcade games via Instagram, posting little video loops playing air hockey with Chyna and “spinning and winning" (and flashing some booty) with Kylie Jenner.

Kylie’s aim was pretty impressive at a target-shooting game, as revealed on her Snapchat. Also, the whole Tyga situation (Kylie's on-and-off boyfriend has a child with Chyna) doesn’t appear to be getting in the way anymore, if Kim's Snapchat is any indication: Chyna and Kylie were seen cheek-to-cheek in a girl group of sorts, singing along to the music at the party in a trio selfie with Kim.

Chyna’s tight black outfit showed her growing baby bump, according to Us Weekly, which said Chrissy Tiegen, John Legend and Scott Disick were also among the guests at Dave & Buster's in L.A. Kourtney Kardashian was also in the mix.

Of course, some commenters on Chyna's Instagram page were less than cool with the newfound love fest, lamenting the fact that she hadn’t told the family to go pound sand after her less-than-warm reception as Rob's girlfriend in the first place. Hey, haters gonna hate.

Grandbabies gonna unite?

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Follow Christie D’Zurilla on Twitter @theCDZ.