Alessandra Ambrosio Making a Splash with Sofia Richie Look, But Don't Touch!

7/25/2016 10:02 AM PDT

Alessandra Ambrosio's Making a Splash with Sofia Richie ... Look, Don't Touch!

Alessandra Ambrosio's on an endless yacht vacation that just gets better and better ... courtesy of her smoking hot friends, including Sofia Richie.

Lionel's model daughter is hanging with Alessandra and co. off the coast of Ibiza. They've been going cray cray on vacay -- holding hands leaping into the water, dancing with each other ... and showering on deck. Lots of showering.

Important note -- Sofia's 17. For 30 more days.