I've been feeling the heat more since getting pregnant but I mainly sweat on my face and scalp. It IS very embarrassing and it makes me feel uncomfortable, especially as no one else around me is sweating.
I don't have a solution, just wanted to offer some sympathy.
I remember an old comedy skit where someone suggested sewing odour eaters into the armpits of their favourite frock... to stop things "getting too woofy".