Kristen Schaal

Kristen Schaal(born January 24th 1978) is an American actress, voice actress, comedian, and writer.

Episode 40
In ""If You're Happy and You Know It" Carol (played by Kristen Schaal) is barefoot when she and Tandy are at a Lake while having the honeymoon they never had.

Episode 55
"Double Cheeseburger" has Carol barefoot when she discovered that she has given birth to her new baby while in her sleep.