Last week as I was getting ready for work, I overheard the following exchange from Kit to Maggie:
Kit (in a cute sing-songy voice): Good Morning Maggie!! It's your big sister, you big sister!!
Maggie happily gurgles back (probably with a smile, since she loves her big sis).
Kit (again with the girly sing-song): Ohhh Maggie, you're such a big girl, yes you're a big girl!!
More happy cooing and gurgling from Maggie.
Kit (with happy surprise): Oh look at you, Maggie...you're stretching like a rainbow!!!