Zac Is Hungover

Zac Efron needs to smile more often!

The Hollywood heartthrob was spotted Tuesdayy at the world premiere of The Hangover at Grauman’s Chinese Theater in El Lay.

And, as usual, Zacquisha was looking muy caliente!

He was serious most of the time, though he did manage to let a smile or two out.

But for realz, time to get a haircut!

[Image via WENN.]