do you mean with straps around the ankle?
i've got fairly thick ankles myself but with shoes it's all about where the strap is on your ankle.
if it goes around the ankle pretty high up, above the ankle bones, it can be unflattering.
but if it's got low-cut straps that hit below the ankle bones, like this shoe Nina Ulphia at Zappos.com
then it's actually pretty flattering, especially if the shoe has vertical detailing up the middle which further creates the illusion of a longer leg.