JLo and A-Rod throw ultimate engagement party: Inside their Bel Air bash!

“So great celebrating with family and close friends last night,” A-Rod wrote along with a stunning snap of him and his fiancée. The smiley photo captures the pair seated and stylish with JLo donning an off-the-shoulder, ruffled white dress. Her warm locks cascade past her shoulders, framing her mid-laugh expression exquisitely. Meanwhile, Alex sported a black suit and open white button down shirt for the ocassion, adding a dash of fun with a polka dot pocket square.

Legendary singer Carole shared this cute party pic, writing: "With @jlo and @leahremini It happened last night! #engagementparty xc."

We missed seeing these gorgeous gals together. Leah Remini celebrated her bestie on the best night, writing in hashtag form: "Reunited and it feels so good." The picture also provides a closer look at some of the ambience: purple rose projections splashed on the walls.

Leah had her love, fellow actor Angelo Pagan, by her side on the enchanted evening.

It seems JLo's squad was out in full force as Leah shared that the triple threat's longtime manager and pal Benny Medina was also in attendance. At one point they all serenaded the superstar with a song!

Another celebrity guest was Ryan Seacrest, who JLo worked with on American Idol. The host happily posed with Alex's daughter Nastasha.

Of course, no guests were more important than family! The proud parents had their blended children on hand, flaunting their tight-knit family bond throughout the night.

Alex kept his usual social media flare going and shared various instances from the private event, like this tender moment between him and his daughter Ella.