These are the Gallery styles available for your website - 2 will be included, your choice.
Style 1 Circle Oval - can be made as perfect circle or an oval by adjusting the width
Style 2 Fixed with Rounded Square - This is a fixed Gallery and pictures have a slightly rounded edge
Style 2a Fixed with Rounded Square - This is a fixed Gallery smaller thumbnail picture and less rounded
Style 3 Vertical - this gallery lets natural height remain and adjusts other pictures like game of tetris
Style 4 Horizontal - this gallery lets natural width remain and adjusts other pictures like the vertical gallery does only it does it with width