Hey there, looking classy!
Round faces have a much more prominent curve than oval faces. The angles are less defined which means you must avoid sunglasses with curvy frames. Go for frames with defined angles which will make your face appear more angular, thinner and elongated. Colorful glasses often look great on circular faces which is also a great plus. So if you have a round face; square, rectangle, and shield-shaped glass frames are amazing options for you!