In my currencies, it is written: [box=#eeddcc]Subeautique Invitations You have 11

Found as a random event while browsing the site. Used for high fashion clothing and makeup in the Subeautique.

To redeem all invites in your inventory at once, click here.[/box]

but in Subeautique was written that I had 10 (I bought 10 invites because in the Subeautique shop it was written 0). Since I already filled it, it doesn't show just 0 nor 10.

is there one in a shop or in your vault?

I wish I knew! I had none, so whatsername wouldn't let me shop, but when I went to my vault currencies, it said I had 1 (now of course there are more, since I have been shopping again)