Hannah Montana is back on Twitter!

The Hannah Montana star — who quit the social-networking site last October - says she enjoys “tweeting vicariously” through costar and friend Emily Osment.

“I’ve been tweeting vicariously through my friend who is on my show, Emily,” the 17-year-old told US TV show Access Hollywood.

“So I’m like, ‘For all the life that you live on Twitter, I’ll live through you’. So I’m always like, ‘What are people saying?’

“I posted a picture on there the other day. She took my picture and I said just write, ‘Hi from Miley’. I stood by a thing of hay and said, ‘Hey!’ and that was it.”