Most notably in attendance was J.Lo's ex Diddy AND her current beau/former backup dancer Casper Smart. But not to fear, the three were spotted having a great time as they danced and laughed the night away.
ICYMI, J. Lo and Puff were one of Hollywood's biggest couples back in 1999 when they dated for nearly two years. Things came to a halt for the two when he was arrested after a nightclub shooting. Inneresting!
It's been about 16 years since the incident so it's safe to say the former flames moved on and can at least be civil!
We're glad to hear Jenny was able to let loose and have some fun with all of her A-list pals — she deserved it!!!
When J.Lo & Co. got to Rihanna's B*tch Better Have My Money as part of the medley of 2015 music, the performer's unitard simply couldn't withstand another second of choreography and unfortunately ripped right at the bum.
Luckily for the girl, the outfit was pretty much skin-toned to begin with, but if you pay close attention, you can totally see her butt.
Ch-ch-check out the wardrobe malfunction in action at the 6:15 mark (below)!!!
Not only did she have an AH-Mazingly beautiful performance, but her partner Derek Hough surprised the lil Aussie with an old photo of her and her father that brought Irwin to tears -- not to mention everyone else!
Of course the pair scored 10s, but they weren't the only ones as Carter and his partner, Sharna Burgess, threw it back to his Backstreet Boys days to prove Nick is still Larger Than Life!
Ch-ch-check out the incredible performances (below) and find out who got the axe last night as we head into tonight's finale!