The rumors are true! Blake Shelton lends his voice to a special new Christmas song from his girlfriend, Gwen Stefani. She teased fans with a snippet of "You Make It Feel Like Christmas" via social media on Thursday (Sept. 21).

The "You Make It Feel Like Christmas" teaser clip Stefani posted to Instagram reveals a fun, up-tempo song that frames Stefani and Shelton in a contemporary pop Christmas setting, expressing thanks for being together with the one they love during the holidays.

"Sleigh bells singing hallelujah / Stars are shining on us too / I wanna thank you baby / You make it feel like Christmas," they sing in harmony on the chorus.

Stefani's leak confirms the rumor that's been swirling since Entertainment Tonight speculated about it in August.

Songs Inspired by Blake and Gwen's Love

"You Make It Feel Like Christmas" is the title song of Stefani's forthcoming Christmas album, which is set for release on Oct. 6. Pre-orders start on Thursday night, and fans who order the album in advance will get an instant grat download of the Shelton track. The album also features other new songs as well as holiday classics including "Jingle Bells," "Let It Snow," "Silent Night" and "Santa Baby."

Shelton previously released Cheers, It's Christmas in 2012.

"You Make It Feel Like Christmas" is not the only musical link between Shelton and Stefani lately. Shelton has just released a new single titled "I'll Name the Dogs," which is the lead single from a new album he is slated to release. Shelton has marriage in mind in the song, proposing to his love, "You name the babies and I'll name the dogs." He even invited Gwen's sons to appear in the video for the song, in which Shelton plays a wedding singer.

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