A couple of days ago I shared something on the Moody Vintage Facebook Page from GQ.com on polka dot ties. Along with the other trends you've seen so far being shared, polka dotted ties can be tricky, if you see it that way. The most appropriate way (and the safest) is wear it with a solid colored shirt. Then, you can add the other trends and look even more daring and 'stylish'. For example using medium sized dots with a checked or plaid shirt, but you have to be careful not to clash colors. Remember, you are going to compliment one item with the other.
These are actually perfect to wear to the office. It's welcoming and not outrageous. I've put together a collection of these ties with shirts you can possibly try with. Yes, it's back in style.
Click image captions for more info.

Paul Smith - Dotted Pin Up-Print silk tie

Paul Smith London slim-fit cotton shirt

Burberry Prorsum polka-dot cotton tie

Alexander McQueen contrast-collar cotton shirt

Drake's slim dotted silk-twill tie

Paul Smith London slim-fit floral print cotton shirt

Turnbull & Asser - Herringbone woven-silk polka-dot tie

Canali - Gingham check cotton shirt

H&M silk tie

H&M Shirt

The Tie Bar - Polka Dot Tie

Boss Black - Miles US dress shirt

Burberry Prorsum skinny polka dot tie

Closed - Campbell Chambray sportshirt