Miley Cyrus posted a pic on Instagram which shows her and Liam Hemsworth posing for an XMAS photo ... and Dax noticed something interesting ...
Check out Liam's left ring finger -- it looks suspiciously like a wedding band. The pose blocks Miley's finger.
They got engaged earlier this year but made no announcement about a wedding date.
And as long as we're talking, also take a look at another pic Miley posted, show her in a Santa's getup. It looks like she might have 2 bands on her ring finger, one being her engagement ring.
You know this source is looking up the marriage certificate
Cue in all the "OMG SHE GOT MARRIED WITH THAT HAIRCUT" comments