Max Verstappen and Kelly Piquet's baby girl already has incredible pace ... 'cause the bundle of joy entered the world right before the Miami Grand Prix festivities!!
The 27-year-old four-time Formula One champion and his 36-year-old model partner made the joint announcement on Friday ... saying little Lily is here -- and mom and dad are already obsessed.
"Welcome to the world, sweet Lily ud83cudf38," the two said on Instagram.