Host Leeann Tweeden has been changing outfits for each round of the tournament since each will be aired as a separate episode. For the first three rounds, she stuck to black dresses with various levels of skin and sparkles, but always covered with a shawl or sweater. This morning, Tweeden broke out of the demure attire with an elegant emerald cleavage-baring sleeveless number. But for the semifinals, she is back in mourning garb, albeit with a Vegas twist. She's now wearing a black dress decorated with black sequins that comes up to her neck and has sleeves to her elbows. Better be careful. If NBC takes too much of the sex appeal out of poker, Doyle might retire.