Says Sian: 'I can't be the only one who has only just realised this?'
Well it appears no, with thousands sharing and commenting and liking Sian’s post - blown away by the discovery.
Follower Jasmine Kukoyi said: 'Omg you learn something new every day. Did any of you notice this?'
To which Maz Burton replied: 'Do you really think we saw the lid long enough to notice?'
Added another: ‘Mind is officially blown!’
But many were shocked that so many HADN’T noticed this about the Celebration font.
Said one: 'If you never noticed it until you saw this picture then check yourself into a hospital please.' Added another: ‘Where have you all been living - under a rock?!?!’
Speaking to the Mail about the reaction to her post, Sian said: 'I can't believe it! I didn't expect it to get this reaction at all.
'When I first put it up, we could see it increasing by a few hundred and then it just went up and up and gained thousands in a few hours.'