Lindsay Lohan Instagram posts reveal more party pictures, and sober friends of the actress claim that their attempts to help the controversial celebrity are being ignored.

Judging from Lindsay Lohan Instagram photos of non-stop partying and almost nude selfies, concerned friends have told Radar Online that they are "worried" and believe the former child star is "headed for disaster."

A source close to Lindsay Lohan says the former "Mean Girls" lead actress has "abandoned her friends and her sober community." Some of these people have allegedly been friends with Lindsay Lohan for more than a decade.

"She has stopped responding to our texts and calls and is basically ignoring everyone now. She's getting the texts because they show up as read; she's just not answering," the source told Radar Online.

"There is nothing anyone can do, until she answers," the source said.

Lindsay Lohan Instagram posts also reveal that the actress may have found a summer fling while in Europe. According to Rumor Fix, the actress has been Instagramming pictures of herself with a handsome friend named Vasillos.

Photos of the two during their trip to Mykonos with other friends show that the pair have been inseparable in recent days.

Reports also claim that the 28-year-old Lindsay Lohan has been so busy partying around Europe that she has been missing rehearsals for her upcoming London play entitled "Speed the Plow."

"The sad part is that there is nothing anyone back home can do and we are all worried for her," a concerned friend said to Radar Online. "She's pulled a geographic thinking that it would help her and all it has done is put her sobriety in jeopardy."

"We all care about her and want the best for her, but there is nothing anyone can do", the source adds.