The video of the woman, in what appears to be a bar, has gone viral with thousands of views on Twitter.
She dances raunchily in just her underwear, with money tucked into her thong, and then puts on the mask in the colours of Celtic.
The unknown woman’s sexy moves, uploaded by @_cb67, were being cheered on by a seemingly a large crowd.
The video now has around 5,000 likes on Twitter as well as many retweets and a flood of comments.
One wrote: “Winning trebles is good, but it’s things like this that make you really proud to be a Celtic fan.”
Another said: “That’s class bet she made a few quid.”
A clearly enthralled fan claimed: “This is without doubt the best thing I’ve ever seen.”
It looks like it took place on the night that Celtic were beaten by Valencia in the Europa League and it looks as though fans found some comfort away from the pitch.
Celtic went down 1-0 in the Spanish city having lost by two goals at home.
There were also clashes in Valencia between Celtic fans and police leading to six arrests.
Celtic got back to winning ways domestically with a commanding 4-1 victory over Motherwell at home.
Brendan Rodgers’ side have an eight point lead at the top of the Scottish Premiership over bitter rivals Rangers and are well on course to win the title.
Still there will be disappointment at the way they bowed out of Europe at the hands of a resurgent Valencia side who started the season slowly, without scoring a goal.