Here's a rare sight you don't see often.

Lindsay Lohan smiling!

The 23-year-old was spotted going through security at JFK airport earlier today.

And she was in a rather happy mood.

No word yet on whether or not she was on some "happy meds," but we miss smiling Lindsanity.

As for her outfit, she still looks like a mess in that department.

Though, is that a slight double chin we see? We kid, we kid.

[Image via WENN.]