Proud mama moment for Kim Kardashian ... her son, Saint West, got the ultimate VIP experience at the Inter Miami vs. L.A. Galaxy match -- escorting Lionel Messi to the field!!
The cool interaction happened prior to Sunday's contest at Dignity Health Sports Park in Carson ... when the soccer GOAT and his teammates walked onto the pitch with a number of local youth players.
8-year-old Saint -- the oldest of Kim K and Kanye West's four kids -- was the lucky one picked to walk with Messi .