Kesha is back--without the dollar sign--and she's looking happier and healthier than ever! The singer made her first red carpet appearance on Saturday at the Humane Society Benefit Gala, after leaving rehab earlier this month. The 27-year-old was glowing in a sheer black gown, rocking pink and green highlights with minimal makeup. Check out her sole gold tooth as well! You may remember Kesha checked into an Illinois rehab facility back in January for an eating disorder, and it?s great to see her looking so amazing! Check out the gorgeous pics!