Wear heels but wear pumps whilst in your seat. and just like the movie devil wears prada, change into heels whilst walking around. It'll look like you wore them all day and you immediately show self-confidence and class.
Do not opt for colour heels, I suggest you wear plain black heels. They suit everything and will look beautiful with any suit.
Of course it depends on the job you do!Glamorous means being sparkling clean and fresh, clean nails, smart clothes, nothing too old and worn, make up understated, lipstick not smudged, heels if appropriate, smile and mean it, remember people's names, be polite.