outerHeight is a useful method from jQuery.
You should definitely make your own plugin, use it for your needs, and in the meantime contribute that code to Zepto with tests.
BTW see @pamelafox's https://gist.github.com/1379704
Got it, thank you!
Haven’t tested it much or anything, but felt I ought to follow up with a link to a gist:
@alohan, I have tried it for a bit, and there seems to be an issue in your plugin with the border's size. It's being added twice.