We might've missed it when she stepped out at the Ghostbusters premiere in early July, but now we're zooming in on Lizzy Caplan's shiny new engagement ring. The actress confirmed she's set to wed Tom Riley, and we can tell she's excited. Just look at how proudly Lizzy flashed her diamond stone, played up by the crystals on her bag and the dainty pattern of her Erdem gown. Keep reading for an all-angles view, and keep your eyes peeled for the next time the star shows off her favorite new accessory.