One of my favourite things to wear currently is the humble t-shirt. Why would I shy away from a soft, cotton tee that is versatile, easy to wash and un-fussy? So long as you avoid anything overly slouchy, well worn, low-cut or with a slogan (tacky or awesome!); keep your hair neat and wear heels, you're good to go!
Here are my top ways to style a t-shirt so it is work appropriate: