Argh, that big-butt-big-boobs beauty type is mostly a stupid hype going on at the moment. Just wait and let it pass. I'll promise you, 2-3 years from now, nobody will talk about it anymore. It's like all those stupid beauty and fashion trends. Everyone gets all hipster-ish about it and wants to look like that and 2 years later nobody gives a fuck anymore. Also, I don't know if this is gonna make you feel better but it's only a US-American thing. I don't think this is an international trend. It's mostly going on in America because of the Latino (and maybe black) minority I think.
Personally, I love east Asian girls. They're my absolute favorite. My girlfriend is Korean but I'm also into Japanese, Chinese and Taiwanese girls. They're all very cute. And one thing they all have in common is that they're all petite, they're skinny and very tender and they have small butts and relatively small boobs. I really love this type of girl. I especially love the small, tight butts. I don't get what people find hot about big butts. So I don't think you should worry :-). I'm sure there are many other guys like me out there.
Yes, that actually was my type in my 20s, as the first girl I really fell for deeply had this kind of body (Japanese, very skinny, long arms and legs and neck). Now my range has broadened (not changed) to include girls with bigger butts, but small breasts is still my favorite.
Honestly it doesn't matter. Sure a big butt is nice. Boobs I could care less. But I'd say the fact is of guys don't date you because you have those physical traits. Don't get me wrong some guys like those traits. It shuts out the manwhores. Their was this one girl who had similar traits. Sure I wasn't completely stunned with her body. But then again it's personal preference. But as I got to know her she was the hottest sweetest girl o ever met. Theirs a lot of hope for you. Keep your head up :)
I will admit, I like classically beautiful figure, particularly broad hips. That being said, if a lady takes care of her body reasonable well and is a good person, she's a go in my book. Can't speak for anyone else, though.
Personally I prefer a nice butt and above average to big boobs but everybody has their own type that they like, and I've also fallen for girls with basic assets just because I liked their personality. So really anything can happen!