The tennis player’s husband Alexis Ohanian put the billboards up for Serena to see on her way to the desert, where she will play in the 2018 BNP Paribas Open in March.
The first billboard says “Serena Williams G.M.O.A.T. – Alexis Jr + Sr” and the three other billboards spell out the acronym, “greatest momma of all time.”
“These just went up on alongside I-10 into Palm Springs. @OlympiaOhanian & I wanted to welcome her back to tennis. Designed them myself, with some help from Jr. #GMOAT,” Alexis tweeted.
Serena responded on Instagram, “Literally am crying. This is so sweet. I love you.”
See the photos of the billboards in the gallery!