Here's a tabby tummy for you! I love how Lily's stripes and white "diamond" patterns show when she is in this position.
Did you know that kitties with gray fur are considered "blue" by official feline standards? There are also four kinds of tabby patterns: mackerel, classic, spotted, and ticked. Lily is a mackerel tabby, because she has gently curving vertical stripes on her sides (resembling fish bones). The nickname for this type of tabby is McTabby. So Lily, in official cat terms, is a Blue McTabby!
But of course, she is just Lily to us!