(Photo credit: Splash News)

Last week, Ashley Tisdale's boyfriend proposed - and apparently, he did so with a giant rock.

On Tuesday, the former "High School Musical" star, 28, debuted her engagement ring on a walk through Los Angeles with her rocker fiancé Christopher French.

"Thank you guys for all your well wishes. Means so much to me. We're so grateful and excited. #imthehappiestgirlintheworld," Tisdale tweeted Monday.

Ashley Tisdale Is Engaged, Rep Confirms

The actress and the Annie Automatic frontman, who began dating last year, were engaged atop the Empire State Building in New York City.

"Best night of my life," Tisdale tweeted afterward. "We're on top of the world."

"There's definitely a thing where I like the dark, mysterious bad boy," she told Maxim earlier this year. "I'm not into the 'game' so much," she continued. "If I like you, I'll confront you and be open about it. Then I expect you to come after me."