Manolo says, here is the Manolo’s latest column for the Express of the Washington Post. Dear Manolo, I’ve been surprised to see that gladiator sandals continue to be trendy, long after one would have thought that they would have gone out of style. In fact, I confess that I’m now powerfullly tempted to get some for myself. So here’s my question: are gladiator sandals appropriate for a woman of “certain age, “ and if so, what would you recommend? Gloria Manolo says, the Manolo is also surprised that the sandals of the gladiators contiue to be fashionable long after the…