The shoes are some cute slingbacks, decorated with a rose trim that matches the flower on the dress. With such a dressy outfit, Clara would probably wear nylons, although hardly anyone here in Arizona ever does (especially not in the summer!)
There's not much to say about 1990s fashion in general, other than it's sort of a hodge-podge of fashions from the 60s, 70s, and 80s. It's not as distinctive as fashion from, say, the 70s. Maybe the fashion will appear to be more distinctive when there is more of a time distance from the 90s to today — more of a historical perspective.
To print Clara's dress, use this PDF file:
To print the Clara paper doll, use this PDF file: