Travis Kelce popped the question to Taylor Swift last week — instantly becoming the engagement of the year — but now fans are wondering if the other big question has been asked yet … yep, we’re talking about a prenup!!!

TMZ spoke exclusively with top divorce attorney Jonathan Levin to get insight into what a prenuptial agreement between one of music’s biggest stars and one of the NFL’s most marketable athletes would actually look like … and he says he doesn’t see a world where those papers go unsigned.

Attorney Levin (no relation to Harvey Levin)  tells us … for people like Taylor Swift and Travis Kelce, there’s a number of things they’re going to want to cover — a big one being the privacy factor.

In this lawyer’s experience, he personally doesn’t see a reality where they don’t draw up a prenup … especially with such high-profile celebrities, and especially when you have such high-end sponsorships and endorsements.

Also worth noting … if kids ever come into the picture, the last thing either of them would want is to deal with custody or parenting issues in a public courtroom.