What a thoughtful husband you are.

Sadie is correct. Each woman's size and shape are so distinctive that she really does need to try them on before purchasing. If you look around the Forum here, you'll see some women prefer Sugoi, others like Sheebest, etc. I don't like Pearl Izumis http://forums.teamestrogen.com/showthread.php?t=8872 but others just love them. My personal favorite is the Trek Criterium ($50) which I just got but haven't tried them on long 2+ hour ride yet. I like my Castellis ($80), too.

Sizing and fit for jerseys also depends on the brand. Some brands are better for fuller-figured women, some for short/long waisted types, and others that flatter the scrawny, shapeless types like me.

And... no undies and no shell!