This college grad is swapping the cap and gown for a wedding gown.

While getting her diploma from Massachusetts' Bridgewater State University earlier this month, Ashley Nelson -- a 4.0 student graduating summa cum laude -- got the surprise of her life when her boyfriend was summoned to the stage where he popped the question.

What's that old joke about women going to college to get their M-R-S?

Nelson said yes in front of a raucous crowd. Kudos to the school for being in on in the gutsy gradposal.

It was obviously a wonderful moment for Nelson (and much smoother than another well-conceived, but botched proposal). She crossed off two of life's biggest events in a three-minute period, which means everything else is going to be a letdown from here on out. And that means her hubby-to-be had better work his tuchus off to make their wedding even more memorable than the graduation.

But, you know, no pressure or anything.