Lol, it'd be much harder for me to find an opposite sex crush, seeing as I'm lesbian.
Alas, I don't pay attention to celebrities.
The closest to a celebrity that I'd say I have a 'celebrity crush' on is Field of Reeds, AKA Kristin Naigus. She is a professional oboist/English horn player and has contributed to video game OSTs and even songs from Steven Universe. She inspired me to pick up the oboe, which ended up with me returning to college. My stupid heart just had to grow a little attached. Liking her even helped me get over my ex. LOL.
I have always loved Nicole Kidman, though lately she has been looking a bit artificial to me (sadly, the pressures of Hollywood to look young forever.)
I have never in the history of ever been attracted to another female, but I can recognize when another female IS attractive, and I tend to try to model the qualities that I find appealing or that others find appealing after myself.