Even worse, they'll be hanging out on another network at the same time. ABC announced that "Jimmy Kimmel Live" will be revealing the 2014 SI Swimsuit cover on Thursday, February 13.
Additionally, Kimmel will have the exclusive late-night interview with the young woman chosen as this year's cover model. The magazine will then hit newsstands -- not to mention the web, mobile and tablet devices -- the next morning.
With an annual readership of more than 70 million, it's a pretty big get for Kimmel. Hopefully they've gotten word out in time. Otherwise, fans are going to be in for a big surprise when they find out the "tradition" is over, and Letterman's not talking to the new cover model.
"Jimmy Kimmel Live" airs weeknights at 11:35 p.m. EST on ABC. The Sports Illustrated Swimsuit Issue cover reveal will be on Thursday, February 13 show. "Late Show with David Letterman" airs at 11:35 p.m. EST over on CBS.