Shark Bite Hem Line???

I’m designing my own tank top right now, but I’ve run into an issue. I love the look of a shark bite hem line (shorter in front longer on the sides). I think they are super flattering and wanted to add it into my pattern but I don’t know how and I can’t seem to find any help anywhere. Does anyone have any tips on how to do this?

I’ve seen patterns that do this by working the longer sides separately until the desired length, then casting on the center section and joining it to the two sides.
There are several patterns on Ravelry that show this if you search asymmetric hem. Some of them continue the longer hem into the back but if you just want the sides longer you could work the back similar to the front.
http://www.ravelry.com/patterns/search#query=asymmetric%20hem&view=captioned_thumbs&sort=best&page=1

They can also be done with short rows. A sloped bind off might work, but I’ve not tried it for shaping a curved or slanted edge.