Kanye West Dedicates Song to Kim at Vegas Concert — Uh-Huh Honey [VIDEO]

An engagement doesn”t get more official than this — Kanye West dedicated his last song to his new fiancee Kim Kardashian during his Vegas concert on Friday … and it was romantic as hell.

Kanye was performing at MGM at the time when he launched into his love song “Bound 2” — but not before calling out Kim in the crowd, saying, “To my fiancee in the building tonight!” FYI, it was Kim”s b-day earlier in the week and the couple celebrated together later that night.

It”s a great moment … and to make it even more perfect, the song”s got some heart-melting lyrics, like, “One good girl is worth a thousand bitches” and “Maybe we could still make it to the church steps.” And “I want to f*** you hard on the sink.”

Okay, maybe not that last one.