I have a pair of table lamps in my living room that need new lampshades. I just haven't been able to find replacements that are the same size as the present shades, which are the ones that came with the lamps.

The present shades are 6"W at the top, 21"W at the bottom and 13"H (on the slant).

The lamps are 34" high (from the top of the shade to the table). The widest part of the lamp is at the very bottom, and that's 9.5".

Can anyone help me find a properly sized/shaped replacement? Thanks!