I think making your breasts grow is a much better side-effect that making your pee glow...

Glowing breast and glowing mushroom from forehead...what can't radiation do?

When your breasts start glowing (and growing, unless she's extraordinary well-endowed) and you start sprouting mushrooms, it's about time to get some Rad-Away.

....Go towards the light, my child!

Popebug said:
When your breasts start glowing (and growing, unless she's extraordinary well-endowed) and you start sprouting mushrooms, it's about time to get some Rad-Away.

they did grow. You can see her apron broke at some point.