Johnny Depp Talks Engagement Ring on Late Show After Letterman's Retirement Announcement

TV Watch

By Kelli Bender

04/04/2014 at 08:50 AM EDT

Johnny Depp on the Late Show with David Letterman

Jeffrey R. Staab/CBS/Getty

Thursday was a night for big news at the Late Show with David Letterman. Moments after the host announced his retirement, Johnny Depp dropped in to talk important life changes.

The Transcendence actor joked about declaring his departure from acting but said Letterman's imminent sign-off stole his thunder.

Instead, Depp gushed about his engagement to actress Amber Heard and the unconventional ring he was wearing.

"I have a female engagement ring," Depp shared. "It was too big for my girl."

RELATED: David Letterman's 9 Unforgettable Late Show Moments

The stunning rock turned out to be a perfect fit for the 50-year-old actor. Depp recently confirmed his engagement to Heard, 27, but the betrothed have yet to dish on wedding details.

Earlier in the show, Letterman shocked audiences by announcing his retirement from late night. After 32 years of hosting and 21 years at CBS, Letterman said he will step down from his desk duties in 2015.

RELATED: Watch David Letterman's Full Retirement Announcement

Follow PEOPLE on Facebook!