First lady Michelle Obama was featured prominently in ABC network’s promotional Tv ads for “Extreme Makeover: Home Edition” season premiere which aired last night.

Most viewers who watched the TV commercials had no idea that Rihanna would be on the show because she was left out of the TV ads. In fact, the network did promote Rihanna’s appearance as a “surprise guest” on blogs and in print media, but not in commercial spots that featured the first lady Michelle Obama. Mrs. Obama simply wasn’t interested in sharing screen time with a public drunken mess like Rihanna.

The Bajan singer, who once famously said, “I’m a rock star, not a role model!,” wasn’t actually on hand to help build a new house for needy families. Instead, she held a meet and greet with the families and a woman’s veteran’s group backstage at one of her concert stops (see video).

There’s no doubt that Rihanna’s public drunkenness has become a major cause for concern. Yesterday on Twitter.com, Rihanna lashed out at others who accused her of being a drug addict. But it appears that she Rihanna was worrying about the wrong thing. She failed to address her alcoholism which has become the talk of industry.

Rihanna’s own camp — those closest to her — are the ones leaking reports of Rihanna’s alcohol abuse to blogs and other media in the hopes of shaming her into cleaning up her act. It doesn’t appear to be working. Hopefully Rihanna won’t end up like Amy Winehouse of alcohol-related symptoms.

Do better, Rihanna!