Doctors, I Have a Very Short Buttcrack, and a Long Torso. Will a BBL Look "Weird" on a Butt That is Very Short and V/Square?

   There are ways to place the fat to increase the apparent buttock length just as there are ways to make the longer buttock appear shorter.  I perform about 500 Brazilian buttlifts each year, and this procedure is the most surgeon dependent plastic surgery procedure.  Find a plastic surgeon with ELITE credentials who performs hundreds of Brazilian buttlifts each year.  Then look at the plastic surgeon's website before and after photo galleries to get a sense of who can deliver the results.

Kenneth Hughes, MD Los Angeles, CA

Hello !Buttocks reshaping can be performed with Fat or an implant. I typically use and implant as it stays around and fat disappears. I also lipo the hips, arms and crease below the buttocks  . I can use fat as well. It may make your gluteal cleft look shorter.

Hello dear!!
Thanks for the question and provided information as well. 
You could probably benefit from a BBL and have great improvements, but unfortunately, without pictures, it is very difficult to give you a proper answer. 
In general, you need to be physically healthy and at a stable weight, have realistic expectations, be a non-smoker and your BMI needs to be 30 or less. l recommend you to make an appointment with a board certified plastic surgeon to talk about your goals and anything you need to know.
Good luck :)