Generation K

It seems that parents who had girls born in 1990 were fascinated with the letter K. My roster for introductory biology this year includes:

Krysten
Katelyn (#1)
Katelyn (#2)
Kathryn (#1)
Kathryn (#2)
Kelsey
Kelilah
Kellie
Kasey

That's over 50% of the women in the class. 'K' isn't supposed to be a popular letter. In fact, it's the 21st most frequent letter in the English language (only ahead of 'J', 'X', 'Q', and 'Z'). It's worth 5 points in Scrabble! How am I supposed to learn who's who?