NEED HELP PLESE!!!!!!!!!

Hi,
Im from MA and I went to newbury street to try on wedding dresses. I loved this dress at La Reine it cost about $2000 but I did not buy it because I want my mom to see me in it. I called them the other day and I asked who the designer is and they did not want to tell me. Finally after calling several times they told me it was Osheana from England. I asked is that what it says on the back of the dress and they said no that all of thier dresses say La Reine. But they do not design the dresses. I told my sister she said she never heard of that designer and that what they are doing is illegal. So I wanted to know if anyone has heard of Osheana, or if they are lieing to me and bought the dress at a cheap place and they want to make a huge profit off of me...