Hollywood news has learned that “Forgetting Sarah Marshall” star KRISTEN BELL had a meltdown and broke down crying on her 31st birthday last July… over a sloth!

Seriously!

kristen bell birthday meltdown

Kristen apparently has a soft—as in cry hysterically in the fetal position type of soft—spot for sloths. You know, those cute little tree-dwelling animals? Because when her fiancee, Dax Shepard, arranged for her to have one at her birthday party, the actress broke down and started bawling her eyes out in her room… out of sheer excitement and happiness.

And she hadn’t even seen it yet.

Kristen appeared on “The Ellen DeGeneres Show” this week and shared the home video of her crying uncontrollably because of Dax’s super sweet birthday surprise.

It’s kind of a strange reaction, but it’s also adorable… and funny!

Photos Via Video Screen Grabs

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