Universal Music EnterprisesOlivia Newton-John and John Travolta may have more Christmas cheer in store for fans in the future.

The Grease co-stars released a holiday album, This Christmas, in 2012, along with a music video for the song "I Think You Might Like It."  Travolta is now teasing plans to expand on the album.

Speaking with E! Online, the actor said, "[W]e're going to try to add a couple of songs every year to that CD.  And then maybe do a music video each year so, at the end of it all, we'll have a whole [collection]."

That's not all.  Travolta raised the possibility of the two acting together again.  He hinted, "Maybe connected to the Christmas idea...maybe a Christmas movie or maybe a Christmas special or something."

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