A top Hollywood plastic surgeon, who has not treated the 17-year-old sister of Lindsay, says that the teen looks like she has had botox injected into her face.

Dr. Gary Alter, from E!’s now defunct TV show Dr. 90210, looked at photos of Ali and believes she’s had work done to change her appearance as she launches her modeling career.

PHOTOS: Ali Lohan Is Looking Scary Skinny

"It's obvious to me that her eyebrows are higher than they were before," Dr. Alter told RadarOnline.

"There doesn’t appear to be much moment on her forehead, and she looks like she has had botox.

"Botox can actually raise eyebrows and get some of the wrinkles out."

To read the rest of the story - go to RADAR ONLINE