Lindsay Lohan was reportedly a "great sport" on the set of Scary Movie 5.

The actress has shot a cameo alongside Charlie Sheen for the upcoming spoof horror film instalment.

Previous reports suggested Lindsay had been reluctant to participate after reading the script as it joked about her stints in rehab and brushes with the law.

However, once she got to set she loved every minute of shooting.

"Lindsay was a great sport," an insider told New York Post. "She was poking fun at herself, and she really got into it and seemed to enjoy it."

The two stars apparently shot a love scene which involved them both being in bed. They shared a kiss and swapped jibes with each other.

"They were ad-libbing," an insider added. "They were joking that they've both had a lot of issues over the past couple of years."

Charlie has also battled personal problems, following his public meltdown and subsequent sacking from TV show Two and a Half Men.

The pair got along so well it was Charlie who Lindsay turned to when she got spooked on set.

"Lindsay was scared by a sound effect, and actually jumped into Charlie's arms," the source laughed.