WATCH: Tina Fey Strips Down to Spanx - You're Welcome

This is admittedly some really hard-hitting journalism we've gotten into here... Tina Fey appeared on David Letterman's show to bid him farewell to late night. After a speech about how she's not really, a dress, heels, and Spanx kind of gal, she stripped down to her bra and Spanx declaring that the the cerulean blue dress she wore for Dave would be the #LastDressEver. Even Dave, who's pretty much seen it all during his tenure on late night, appeared surprised by Tina's delivery of her declaration. 

Here she is in all of her glory:

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