See here:
http://www.w3schools.com/sql/func_convert.asp[
^] for the standard SQL date convert codes: if it isn;t one of those (and it isn't) then you will have to play with the SUBSTRING or DATEPART functions to get exactly what you want.
But as has been mentioned, you shouldn't do this in SQL: it's really a presentation function and should be done as late as possible to ensure that it can be done in the format the user understands.
02/27/2015 is fine - it can be seen as the date easily.
02/03/2015 isn't - in Europe that's the 2nd of March, in the US it's the 3rd of February.
You should not assume an output format unless it's for a very specific report where it has to be that way.