Stefon Diggs Surprises Cardi B With Truck Full of Roses for Album Release

Stefon Diggs went all out for Cardi B's big night ... gifting his girl a flower surprise so big, it had to be delivered on a flatbed truck!!

The touching gesture went down Thursday in New York City ... just hours before Cardi's "Am I the Drama?" was released -- her first album since 2018.

The New England Patriots star was present for the reveal ... and judging by Cardi's reaction, she never saw it coming!!

The finished product was a MASSIVE custom container filled with roses from Venus et Fleur ... which featured Cardi's face and LP name right on it.

Diggs -- who signed with the Pats in March -- has been very supportive of his girlfriend's second album ... writing in her Instagram comment section, "Proud of you for staying focused ❤️"

He's also excited about their new bundle of joy on the way -- Cardi, 32, just announced this week she's pregnant after weeks of speculation.

Diggs, 31, is crossing his fingers for a boy and already has a list of Spanish names ready.