What does it mean to have "Angel Eyes" Or "Baby Eyes"?

I got a comment yesterday that I have Baby eyes. And Gotten quite a few times that I have angel eyes. What does this mean? What does each one mean...Angel and Baby? The baby one gets me more because I'm a young female adult lol so I don't get it. Articulate and definately not naive. Can I please get some oppinions? I definately reward best answer. Thanks so much in advance. =D