Adam Lambert & Ferras: Halloween Hotties

Adam Lambert dresses up as a glammed-out vampire for a special Halloween party in Los Angeles on Saturday night (October 31).

All night, the newly single American Idol vet was seen hanging out with pop rock singer Ferras, who dressed up as an Arabian Prince with Markus Molinari.

A few weeks ago, Adam and Ferras (both 27) were also seen partying together at Star Magazine 5th Anniversary shindig. The pair have been collaborating for awhile now. Back in June, Ferras tweeted, 'Spent the afternoon writing with Adam Lambert! Havent seen him since before idol- we're writing a great song. Its gunna be sick ya'll. :)'