no I think you're regular size should be okay if they are textile or suede,
if you get an all leather pair they might stretch out a little over time so maybe go down .5 if you prefer a snug fit, but in general TTS is good for the Club C's.
I'm not sure if women's differs from Mens but I wear my true size in Club C, go up 1 full size for Classic Leather or Ventilator, and half a size for Instapump fury