Pommy try reframing what he ask you - men are attracted to woman who take care of themselves. NOW, don't jump on me as I'm not stating it always has to be physical appearance or always looking 100% on point.
What happens when Pommy does something for Pommy? Whether its your hair, nails, you snuck away and read a book for pleasure, you went on a nature walk because YOU wanted to... when Pommy puts herself first from time to time what happens? Your confidence goes WAY up - that's attractive.
Your husband is making suggestions because he wants you to feel good about yourself. AND, perhaps the fact that he wants to go with you to pick out dresses/underwear... perhaps he finds that to be a sexy activity!!! Its fun, I will say when my H would let loose and pick things out for each other :-)
Its hard to not make your mind go to the first negative but take a moment and reframe --- maybe pick up the Empowered Wife and give it a read. Its quick and you may find it helpful.
Glad things for you are swinging your direction. :-) Happy DB!