Chelsea Clinton Gets Lost in Bae's Eyes

Chelsea Clinton's smile says it all -- get yourself someone who looks at you the way her hubby does.

The former First Daughter couldn't hide her Colgate smile while getting lost in her husband Marc Mezvinsky's eyes ... as they took a stroll through the Lincoln Center for the YAGP Gala: Stars of Today Meet the Stars of Tomorrow ballet performance at the David Koch Theatre in NYC.

Gotta wonder ... what did Marc say or do to make her smile like that.