I have seen cute sparkly and some not so sparkly monogram cake toppers on some of the girl''s pages on the knot. I don''t dare ask where they bought their''s seeing as they aren''t the friendliest group over there.
For the sparklies, I believe some of the girls just buy the plain ones, and glue craft beads/notions onto them from michaels, in your wedding colors. they look nice!
that link looks weird to me, if it doesnt go straight to the initial cake topper click on the next link and you''ll be able to find it easily http://www.lovelettersweddings.com/
Hey - you really should try asking on the knot. I know that there is one knottie who actually makes them for other knotties. I think a lot of them are DIY or at least you have them made.