So here we arrive at #45.
Who...or what...is this?
Incorrect Guesses So Far:
A piece of blue construction paper?
Irondog
A hockey stick
Adidas Glove
Dr Spock
Avril Lavigne
Morty
The head of a black cow
The View From My Window
Alyssa Milano
A chick dressed as a penguin
Jennifer Love Hewitt
Anna Chlumsky
Linda Hamilton
Kirstie Alley
Jennifer Aniston
Misha Barton
Sheryl Crow
Iamthesevendeadlysins
Claudia Black
Nora
Sharon Osbourne
Monica Lewinsky
Mary McDonnell
Maximal guessed correctly with Lucy Lawless.