This is a Belle Epoque Dress from the Belle Epoque Shop but you have to be in the TeleportHub group which costs only 10Lds. One size does not fit all so for my SLink shape it’s a nope but for you Maitreya’s then it’s a yes.
Also, that “The sun is coming” hunt is still on! I blogged it a while ago now but if you missed it or it was too busy to attempt it then this is the time. There is, of course, a picture of the prizes and each only costs 10Lds so make sure to check that out.
PS. The dress is more white than cream.