Is it normal i'm attracted to my aunt?

My aunt is a nice, sweet woman. She is about 33 (total guess) and is my dad's brother's wife. I am insanley attracted to her. Like, so attracted I'd rather hook up with her than the sexiest woman in the world. My aunt isn't what the average male would call hot. She is a bit chubby, huge breasts, big butt (from the chubbiness, not really the ideal bubble-butt), and probably a 5/10 face that for some odd reason I fine insanely adorable. I have a hard time being with her because of how bad I want her, and I feel like I should tell her how I feel so I can get it off my chest, and also to see if she maybe has any feelings towards me, because she doesnt seem to care when I gawk at her 24/7, and there is no way she would not notice. Should I tell her or should I try and stop thinking about her that way? And of course, is it normal...?