Lopez, who is currently in the middle of her Up All Night Tour, reposted videos from the grand celebration on her Instagram ...

The toddler is celebrating her birthday on March 25, and everyone is welcome to join her for some wild fun! Grace looks so grown up in a white dress covered with dinosaurs and trees.

The birthday girl, meanwhile, wore a slinky gold Saint Laurent slip dress ($4,900) and Sofia, who welcomed her first baby in May, chose a tartan Saint Laurent blouse ($5,556) with black trousers.