Is it normal i like wearing womens underwear

I am a guy who like to wear bra, panties, lingerie, and womens underwear. It makes me feel so feminine and embrace my girly side. I like how the bra feels against my nipples and how tight my balls feel in panties, especially if they have lace, satin, or silk. Because I don't have a girlfriend right now I steal this stuff from my sister's closet. I'm a junior in high school but my sister is in college so she doesn't live with us. But some of her clothes are still in her room so she has no way of finding out what I'm doing with them. Right now she is back home for the winter break. Because of that I stole a few of her underwear and hide them underneath my bed. A few times I even ejaculated in my sister's underwear thinking about her. I get so turned on thinking what would happen if she ever found out. Sometimes I wonder if I should intentionally wear her underwear and start touching myself and not care if she comes into my room for whatever reason, it would arouse me and excite me so much to see her face when she realizes what I'm doing and in her bra and panties. I might cum just thinking about seeing her shocked and puzzled face, and the inevitable ridicule and blackmail she will torture me with. My sister is a goddess