Studio City Pilates Instructor Says Miley Cyrus's Weight is 'Just Fine'

Miley Cyrus is doing just fine.

Twitter feeds and concerned fans have noted that the 19-year-old superstar singer in Studio City seemed to have been losing a lot of weight lately. 

Cyrus works regularly with Studio City instructor Mari Winsor almost daily. 

Winsor told People magazine:

"What we focus on with Miley is posture. That was my main concern when she first came to me," Winsor said. "I wanted to get her shoulders down and get her to relax her upper body. If you notice, her posture is a lot better.

"She works hard," she added. "When this girl comes in, she is on fire. She's focused."

Winsor said she thinks people who are worried the actress is losing too much weight "need to chill out."

"She's healthy and she feels good, that's the main thing. She's smart about her body. She wanted to sculpt her body, that's all."

Read the full report here.