As for shoes, do not choose shoes you would wear to a nightclub or a wedding. There are work shoes and there are "those kind of shoes." Make sure your feet are well maintained. I am sorry, but there is nothing worse than a half polished foot wearing really nice peep toe shoes.
Some of my favorite celebrities that dress modestly yet fashionable are: Kate Middleton, Reese Witherspoon, Natalie Portman, Jennifer Garner, Savannah Guthrie, Ashley Olsen, Diane Keaton, and Jennifer Aniston. These woman are very focused on their fashion and style yet they know they don't have to show too much to gain attention.
* Although opinions and views expressed are my own, Bucks2Blog compensated me as part of a blogger campaign.