If you have a heart shape face then you are extremely lucky as you will find most styles will suit you. If you are tall then you could carry off large brims and large discs. A large aysemmtric disc would be a fabulous choice! If you are petite or find that a little too daunting then opt for, or try a medium sized disc or brim as having the aysemmtric angle will soften & balance the narrowness of your chin!
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xoxo