spotted isn't about the attractiveness or otherwise of who you spot, thats subjective from your part and has no bearing on what they look like to the rest of us, you could have just said, girl on x bike at x road at x time, describe distinguishing features of bike and them and leave it at that, rather than what you said below.
which in the great scheme of things is a pretty poor description of the woman and the bike.
Nicely put sir!