Amber Rose and Wiz Khalifa Throw Joint Birthday Bash for Son Sebastian -- See the Pics!

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Happy birthday, Sebastian!
While Amber Rose says she and Wiz Khalifa aren't back together, the two reunited after their steamy red carpet kiss last weekend for their son Sebastian's birthday on Sunday. 
The pair went all out for Sebastian's 4th birthday, even rocking elaborate costumes for the tot's super-hero themed soiree. 

Sebastian had his face painted like the Joker and wore a Catboy costume. The little cutie even got into character as he wrestled with Blac Chyna's son, King Cairo, with Rob Kardashian's fiancee goofing off in the background. 

Chyna wasn't the only famous face (or extended member of the Kardashian family) at the superhero fete. Khloe Kardashian's ex, Lamar Odom, also made an appearance, posing for a photo with Khalifa.

Rose and Khalifa clearly have no problem coming together for their son, despite Rose's recent insistence that she's single.
"Wiz and I are family and we will be family for the rest of our lives," Rose wrote in a now-deleted Instagram post last week. "A kiss on the lips for a photo and a fun night out is not a big deal for either of us, we are in a great place but we are very much still divorced and not together." 
The  model and TV personality recently ended a five-month relationship with Dancing With the Stars pro Val Chmerkovskiy. See more in the video below.