The photo shows Miley wearing a thin, lace spaghetti-strap top that exposes about half of her underarm tattoo.
Click on the photo to see it full-size!
“Rocking piggy tails for the first time since like 6th grade! I love summer time,” she Tweeted with the photo.
Miley quit Twitter in a huff last year, abandoning more than two million fans, after claiming she wanted to keep her private life private.
But out of sight means out of mind.
She acknowledged recently that she’s bypassing the United States on her current tour because she doesn’t feel there is enough support for it.
Instead her Gypsy Heart Tour will take her to South America for the first time and then to Australia over the summer.
To promote her trek, she opened her own Twitter account under the name “gypsyhearttour,” according to PopEater.
Before that, she’d started Tweeting under the name Rock_Mafia. “This is my new way to connect,” she tweeted. “When I need to speak out I will tweet from @Rock_Mafia.”
She wasted no time provoking a controversy, tweeting that she was a big fan of Charlie Sheen.
“Do not fear…the Sheenius is here!” I’m not gonna lie. I came back to twitter for 2 reasons. My fans and to follow @charliesheen #winning.”
Cyrus is also back to tweeting about her private life. “Yo guys! Its MC! Thank you so much for my KCA! PS I am taking over the Gypsy Heart twitter! Gotta keep ya posted on tour …”
In a YouTube video released last year, Cyrus rapped the reasons for quitting. “Yeah, the rumors are true, I deleted my Twitter,” Cyrus raps in the backstage video – complete with choreography.
“I had to say goodbye,” she continues, “and this little rap is to tell my fans why.”
Now she’s singing a different tune.
“Lets get me back to as many followers as before!!!!!! SO EXCITED FOR TOUR I CAN BARELY STAND IT,” she Tweeted about her upcoming tour, which kicks off in Ecuador.
Watch her twitter farewell rap below and check out the photo.