outtacontrol, if the busty jessica simpson can rock so many mike & chris styles, then you definitely can!
i've tried on lots of them. generally i think they fit a little small, not much, so if you are between sizes, go with the bigger one. im normally either an x-small or small, so in mike & chris small is perfect for me. if you have a large bust or shoulders, definitely lean towards the larger of the sizes you wear.