Gwen Stefani is playing coy about rumors that she and Blake Shelton are planning a wedding.

The 46-year-old singer fielded questions about her future with the 40-year-old country star and fellow "The Voice" star while appearing on Thursday's episode of "The Ellen DeGeneres Show."

DeGeneres told Stefani she's "so glad" she and Shelton are happy before fishing for details about the couple's reported nuptials.

She asked Stefani to reveal the wedding date so that she "can clear [her] schedule."

"Oh, you're crazy," the singer responded with a smile. "I'll let you know."

"The Voice" producer Mark Burnett, who worked with both Stefani and Shelton on the NBC reality competition, had hinted this week that a wedding is indeed on.

He told reporters at the Emmy Awards on Sunday that he's "really hoping" to be invited.

"I had no idea by coming to work on a fun music show they would find the loves of their life, and the light exploded and they are happier than you can imagine," he said.

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"We are all thrilled to be their friends and see the happiness."

Stefani and Shelton confirmed their relationship in November after splitting from their respective spouses, Gavin Rossdale and Miranda Lambert, earlier in 2015.

The singer shares three sons, Kingston, Zuma and Apollo, with Rossdale.

"They had the best time," she told DeGeneres of taking her kids on tour over the summer.

"[Zuma] walked me on and off the stage every single night ... he was so into it. It was way more incredible than I could have ever imagined."

Stefani last released the album This is What the Truth Feels Like in March.

Shelton, meanwhile, released If I'm Honest in May, and recently reunited with Lambert on the single "Country Roads."