Ali Lohan Shocks Onlookers With Super Thin Frame

Lindsay Lohan's little sister Ali is now the object of scrutiny, debuting a severely slimmer shape as she kicks off her modeling career, Radar Online reported Wednesday.

The 17-year-old, who is signed with NEXT Model Management, has spent much of the summer with her big sis in Los Angeles and was photographed appearing gaunt this week -- a vast departure from her typical youthful glow.

"It's scary to see my daughter looking like this," her father, Michael Lohan, told the gossip website.

Click here for more Ali Lohan photos from X17 Online.

"Ali was always on the thin side, but seeing how much weight she's lost there appears to be a drastic change that concerns me," he continued about the brunette beauty.

"This industry has a way of having a harmful affect on one's health and well being. To see what Lindsay has gone through is one thing, I certainly hope Ali isn't going through the same thing," he added.