What can I (F29) do to help my husband (M30) feel sexy and attractive despite losing his hair

Throwaway because hubs knows my actual account. I've been with my husband since we were in our late teens and I love him to death. We're approaching 30 now and expecting our first child together. Recently he's been really down on himself because of his receding hairline and male pattern baldness. It's really affected his self esteem and he refuses to take pictures or look in the mirror much anymore. I think it affects him even more because he's still young. It breaks my heart. I genuinely and earnestly think that he's so sexy and attractive. He turns me on now as much as he did when we first fell in love, maybe even more now that we've been through so much as a team and are having a baby together. In fact, my pregnant horny ass is the one who has to initiate sex most of the time because he's wary about jostling the baby too much. It really breaks my heart so much whenever I see how down he gets about it (he's not a big complainer, and doesn't get into his feelings much, but I can see how down it gets him from occasional little remarks about how ugly and bald he's getting, never wanting to be in pictures, always wearing a hat wherever we go etc).
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I know this isn't something anyone else can help with, but is there anything at all I can do as a spouse to help boost his confidence and make him feel as sexy and handsome as he is to me? (without coming off too contrived and out-of-character of course)
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TL:DR - Heartbroken about how down my husband gets about losing his hair. How can I help him boost his confidence and make him feel as sexy and attractive as I find him to be?


Source.