Zac Efron, you're looking a little different these days.

The actor showed his support for the Orlando shooting victims in a touching Instagram photo — but fans couldn't help but notice his, uh, plump pout.

RELATED: Zac Efron May Or May Not Be Single Again, Deletes All Pictures With Girlfriend Sami Miro

To see the startling difference, here's a side-by-side of Zac at a press event just last month compared with yesterday's Instagram post.

zac efron plastic surgery

Zac in May 2016 (Left) vs. Zac yesterday on Instagram (Right).

In the comments section, a few fans are speculating that the actor received fillers, but he hasn't admitted to getting plastic surgery.

What do you think — plastic surgery or just bad camera lighting?