Thankfully helmets have come a long way in the last few years with a greater range available for those of us who must, or want, to wear them.  Some very pretty helmets can be found at Cycle Style's online store. One of my favourites is the Ocean Flower helmet. A pretty and practical hard shell helmet with a red and pink floral design. (In the center above)

These helmets are a single size in the shell and can be adjusted to fit all sizes from 54cm to 60cm head circumstance using the included set of foam pads. As a guide, small/medium sizes fit around 54-58cm and large sizes fit around 58-60cm. They come pre-fitted with the large pads.

Ventilation holes on the top, front and back of the helmet keep you cool as you cycle.

The helmets meet all impact testing requirements of Australia/New Zealand (AS/NZS 2063:2008), USA/Canada (CPSC/ASTM) and UK/Europe (CE EN-1078)

Available online from CycleStyle