A suit is not to be played with. I am not quoting anyone here but that is the general perception for suits I feel. I think suits are meant to be played with. A cool shirt is definitely a great start to experiment with your suited look. Like this printed cotton shirt which I picked up from a thrift shop because of how vintage looking it was with the wide cut collar and the retro style floral print on it.
I suggest more muted colours for the print, specially if you are wearing classic colours for the suit. The print in itself is good enough to infuse the fun element. Considering we move around in air-conditioned environments from place to place and mostly keep the jacket off, resting on the back of your chair or your folded arm or your shoulder, the print keeps the look interesting and visually appealing. Trust me, a printed shirt with a suit is also a brilliant conversation starter. Just don’t only talk abt that. It is a great day look and makes you feel a little less formal.
I finished the look with my ASOS brogues and a woven belt with a metal buckle for that slight shimmer.
Retro, City, Resort, Chic.