Where to begin? Ok, the cast.

Thomas Beatie: transgender man who has given birth to three children via cryogenic donated sperm and a syringe because his wife Nancy was barren.

Chaz Bono: Sonny and Cher's daughter who underwent a sex change because Chaz wanted to get "rid of something on my body that felt like it didn't belong there since they started to develop at, like, 11 or 12."

Both: wanted to be on Dancing With The Stars.

Only one: will be appearing on Dancing With The Stars.

Said Thomas to TMZ ...

"Chaz Bono stole my thunder. I wanted to try my new body out. I'm an athlete and I know I would have excelled."

Pity, too. Pregnant Man and Metta World Peace would've totally hit it off.

Obligatory sports note: Hope Solo made the casting cut, if you're into that kind of thing.

Pregnant Man: Chaz Bono Hurt My Chances For "Dancing with the Stars" [TMZ]

Chaz Bono: DWTS Pro Lacey Schwimmer & I 'Instantly Hit It Off' [People]

World's first pregnant man unveils muscular physique after three babies in three years [Daily Mail]

Chaz Bono, ¿le robó el show al hombre embarazado? [Impre]