Liam? Who's Liam?

Seems like Miley Cyrus already found herself a new boyfriend, or a post-breakup rebound at least.

According to E! News, Miley Cyrus and Benji Madden were seen making out on Halloween Bootsy Bellows, a Hollywood A-list hangout. Miley were there to have fun with a big group of girls and meet up with Kelly Osbourne and her fiancé Matthew Moshart. Miley was in her eye-catching Lil' Kim costumer ready to party. Everyone was having fun, laughing and giggling. Osbourne however, left early with Moshart after catching up with Miley for a short time.

However, the girl's night did not last much longer either. When Benji came, the mood transformed from one that is laid back and fun-filled into one that is more romantic. The Good Charlotte Artist guitarist came with owner John Terzian.

It did not that take long for things to heat up between Miles and Madden. Details of the make out session were shared by MailOnline. According to source, who is an eyewitness, 'Soon they were flirting and talking very closely. Then they shared a kiss. They left Bootsy Bellows together around 1 am."

'They tried to be discreet by sharing a car with some other friends but it was clear they were leaving as a couple.'

Benji Madden was Paris Hilton's ex-boyfriend, who ironically, was dressed up as Miley in her VMA costume for a early Halloween party last October 26. Interestingly, the singer was also seen hanging out with the heiress, who was wearing a leopard Playboy cat outfit - just hours before the Bootsy party at another infamous nightclub at the Hollywood scene, the Beacher's Madhouse.

Miley's relationship with Liam Hemsworth ended two months ago. Liam had also been caught kissing actress Eiza Gonzales. If it is still not clear, it is now apparent that both parties have already moved on.