What's better than supermodel Kate Upton in a bikini, on a runway? How about supermodel Kate Upton, in a bikini, in zero gravity?

For this year's Sports Illustrated Swimsuit Issue, Upton and a few photographers boarded a Boeing 727 and achieved weightlessness to create what might be one of the best SI Swimsuit Issue photo spreads EVER.

The 50th Anniversary Sports Illustrated Swimsuit Issue is on newsstands now.

You can see some behind-the-scenes footage below:

[USA Today]