But one thing does remain unanswered -- how did Caitlyn pick her name?
Age is just a number for David Letterman because he's turning 65-years-old this Thursday, but still plans on hosting The Late Show for a few more years.
The comedian on the verge of senior citizenship extended his contract with CBS through 2014 recently and Ricky Gervais helped him celebrate his good fortune on Monday night's broadcast by giving him the most practical (and HIGHlarious) age-appropriate gift he could find in New York.
Wanna see what the Life's Too Short star gave CBS' favorite talk show host? Ch-ch-check it out (above)!