Well, I think they're both beautiful names, so I can see how they're so popular, but I only know one
Evelyn and and
Evalyn (pronounced the same way). I don't know any
Lillian's.
I really love
Lillian, but I definitely wouldn't call her
Lillie or
Lily or anything. I think
Lillian is beautiful as it is. I also love
Evelyn. I like
Evie too, but I wouldn't call her that all the time. But I do kind of think lots of
Lillian's are called
Lily.