Suri Cruise's unknown, possibly vintage 2000s, prom dress seems to be a hot topic. Since no one has yet been able to figure out the designer, it's possible it was actually custom designed/made for her. Mom Katie Holmes has just done a capsule collection with French brand A.P.C that was supposedly inspired by 2000s fashions, so it wouldn't be surprising that Suri would have something done reminiscent of that time period.