Blouse White

How do I wear a white blouse?!?! Should I wear a pink wifebeater under it and have it half unbottoned??
Ok I have to wear jeans and a blouse for a school dance performance. I was wondering if I should wear a pink wifebeater under it?? And then have like half the buttons at the top unbottoned. Should I? Or should I just leave 2 or 3 unbuttone with a different colored shirt?? I’m in seventh grade. I need to look nice!! Please tell me how i should wear it and not look like an idiot?
Any color ribbed tank top underneath would work, if you want a colored tank top to show through. Colors like lemon yellow, medium pink, teal, medium green, or white if you don’t want the color to show through. As for how to wear it. Don’t unbutton a more then two at the top, it causes the blouse to drape weird, making you look wider. Don’t unbutton more then 2 on the top of the blouse, and one on the bottom, simple dark jeans, and flats. Hope this helps.
Soaked White Blouse