I personally don't consider Elle to be a "real" supermodel, in the high fashion sense of supermodel. She did little editorial or runway work; she was mostly associated with Sports Illustrated.
I do like (and miss) Karen Mulder, though. She definitely was in the Supermodel Class of the early-mid 90's. All her personal problems (depression, etc.) in recent years are quite tragic. It fortunately seems as though she has recovered (after a second episode) and is going strong today. No longer modeling, however.