Families that celebrate together stay together. 

Such is the case for the New York Liberty's Sabrina Ionescu and Golden State Warriors star Steph Curry, whom she has referred to as her “big brother."

In the closing seconds of the Liberty’s 89-77 win over the Atlanta Dream on Friday night

 Ionescu hit a deep three to put the game out of reach. 

After she sunk the shot, Ionescu hit Curry's now-famous Night Night celebration.

The Night Night — which says to the other team, “party's over, time to go to bed” —

 became Steph’s signature this postseason after he broke it out during each round of the Golden State Warriors' championship run.

Steph was proud of his pal, retweeting a clip Ionescu’s shot and writing, “Start a movement. Congrats All-Star starter!”