't Aint what you wear, 't aint what you ride . . .
Most folks tend to wear cycling specfic clothing/shoes but 't aint necessary.
Just because you're wearing a jersey does not make you a 'racer.'
Cycling specific clothing does make some sense, eventually. Padded cycling shorts for comfort, same with cycling gloves. Jersey has pockets in rear for stowing stuff and long zipper to control temp a bit and most are made with moisture (sweat) wicking material. Helmet to protect the noggin in case of a crash (always 'unplanned").
Cycling specific shoes instead of tennies (stiffer soles) and they do make sandals for clipless (SPD) pedals.
None of these things are 'mandatory'.
Just think how someone in full riding kit on a fancy bike feels when folks like you in 'non-riding' street clothes pass them?!
Enjoy the ride TWOgether !
Rudy and Kay/zonatandem