The key thing is to make sure it's not too short in length or too clingy, but still is fashionable with it's cut. I don't ever think you need to go OTT with a work dress, simple accessories and a sleek bag and that's all you need. Keep your heels not too high (mainly favoured if you are on your feet all day) and make sure they're well made and well lined inside.
I found a dress which is perfect for the office, the interview or for a business lunch.... I loved this kick flare dress I spotted at Next the other week. I do a lot of events work so it's ideal for all of my meetings and is comfy due to the great feeling material. This dress is so good because it will work for any aged woman, it's a cute shape with a tan bow belt around the middle to nip in at the waist - creating that curve we all love!