I discovered today that Katryn is ticklish! I've been waiting for this, because she laughs in her sleep, but hasn't had a 'real' laugh out loud. Very close a few times.
the few times I've tickled her she gives me these looks saying, "what are you doing to me??". I was tickling her legs and laughing at her and she started giggling! yay! what a great milestone to hit right before her 4-month birthday!