He thinks I'm sexy?

My husband keeps telling me he wants me to wear lingerie and seduce him, but I don't understand why. I'm kinda cute, I guess, but I'm overweight and feel super self-conscious about my body. I'd love to do this but only if I had the right measurements.

Update: I bought lingerie for his birthday and surprised him with it. He was so happy and kept telling me how beautiful I look the whole time we made love.

Thank you ladies, for your input. I don't think I would've taken a chance without your encouragement.