Provocative photos of troubled Disney star Demi Lovato have appeared on the internet.
The images, posted on Twitter, show the 18-year-old singer with her top pulled down to expose her chest as she poses with her backing dancers.
One of the girls in the picture is Alex Welch - the dancer Demi recently attacked, prompting her recent trip to rehab.
Demi checked into a treatment centre in Illinois for 'physical and emotional issues' after lashing out at Alex and punching her in the face over a supposed misunderstanding during a flight from Peru.
Demi was on tour with the Jonas Brothers Live in Concert Tour when the confrontation occurred on a flight from Peru.
Alex, who has also performed with Pink, Miley Cyrus and Justin Bieber, claims Lovato was upset because she had 'gotten in trouble' over antics on a night out.
Tour managers stepped in to question the teen over her behaviour and Lovato suspected a back-up dancer had snitched.
As Welch tells it, Lovato 'pulled the dancers in a room and threatened: "If I find out who told on me..."'
She then alleges Demi hit her.
Pictures have since emerged showing Welch sporting a bruised cheek and eye and the dancer has claimed she is yet to receive an apology from the star.
Demi is set to face legal action over the incident.
She is expected to remain in rehab until the new year.
The teen has struggled with body-image issues and self-harming in the past, but her team dismissed any claims that she is being treated for drugs.
Source