Kesha made her first public appearance since completing rehab -- and [article id="1723692"]dropping the dollar sign[/article] -- earlier this month, walking the red carpet at the Humane Society's 60th Anniversary Gala in Beverly Hills on Saturday (March 29) night.

Kesha, who is an avid animal rights supporter, posed for photos on the carpet at the Beverly Hilton in a long, sheer halter dress, with her hair dyed in various hues and her fingers loaded with jewelry.

She didn't speak to reporters on the red carpet, but she was obviously in the mood to celebrate, as evidenced by an Instagram video shot by hair and makeup artist Vittorio Masecchia, which shows her and her pals singing along -- very loudly -- to Beyoncé's hit "Drunk in Love."

Hey, it's [article id="1723563"]not Ed Sheeran[/article], but it's close.

Kesha first entered the [article id="1719874"]Timberline Knolls Residential Treatment Center[/article] in January to treat a long struggle with bulimia and, in her words, "to learn to love myself again." Since completing the program, she's kept a low profile, though in handful of messages to her fans, she thanked them for their support, and promised that she'd already begun working on new music. She also changed her Twitter handle from "KeshaSuxx" to "KeshaRose."

Happy to be back! Feeling healthy & working on tons of new music🐱I can't thank my fans enough for all the love & support u have given me❤️️

— kesha (@KeshaRose) March 7, 2014