She's always been pretty skinny. She was a rescue cat and was a bit virus-y when we first got her (kind of non specific, brought on by stress and made her third eyelids prominent for a couple of weeks). She's about 1.5 years. She eats OK although has been a bit fussy recently. She feels very slim and slightly bony in areas like her backbone and breast bone. But she's active and asking for food a lot just doesn't eat a lot in one sitting. It probably doesn't help I'm comparing her with my other portly cat (got them together although they're not siblings). I've only ever had chunky cats so having this little slim puss is different. She is a very small cat too. Does she look OK?