Appearing on the Nick Grimshaw Breakfast Show, Olympic diver Tom Daley joked that his upcoming wedding to Hollywood screenwriter Dustin Lance Black might be a “swimwear only” event.

“The date hasn't officially been set yet,” Daley said of his wedding. “We're thinking sometime next year. Maybe spring next year.”

“It's so grown up, isn't it?” the 22-year-old rhetorically asked. “I have no idea about where it's going to be or what's going to happen, because Lance … is currently in Los Angeles editing [the ABC miniseries] When We Rise.”

When asked if the wedding will have a diving theme, Daley joked: “It's swimwear only. That's the dress code.”

Daley and Black got engaged in October.

(Related: Tom Daley jokes marriage proposal to Dustin Lance Black was “a race.”)