Kaitlin Olson knows how things would go if Dee (It's Always Sunny in Philadelphia) and Morgan (High Potential) tried working together.

It's Always Sunny in Philadelphia's Rob McElhenney and Kaitlin Olson are a real Hollywood power couple, and here's why.

Kaitlin Olson’s It's Always Sunny audition wowed FX bosses, earning comparisons to Lucille Ball for her iconic comedic talent ...