Well, that was fast! The last Elvis Presley's granddaughter Riley Keough has locked in her hunka-hunka burnin' love!

After about six months of dating, Lisa Marie Presley's model-actress daughter, 22, is engaged to Alex Pettyfer, a source confirms to Us Weekly.

After connecting as costars on the upcoming male stripper flick Magic Mike, Keough and the British actor, 21, were first photographed smooching last October. And on Monday, the twosome grabbed lunch at Le Petit Four in L.A. --with Keough sporting an engagement ring.

当地时间12日，亚历克斯与女友莱莉·科奥现身洛杉矶，与友人一同用餐。面对狗仔队的镜头，两人毫不避嫌，不断做出亲密举动，莱莉还有意地抬高双手拿包，秀出左手无名指上的宝石戒指，似乎在高调宣布：这个男人是我的了！

几乎是“拍一片，爱一女”的亚历克斯与莱莉相识于新片《魔力麦克》片场，并迅速传出恋情。莱莉可是来头不小，她是猫王的外孙女，其母丽莎·玛丽还曾与尼古拉斯·凯奇有过一段短暂的婚姻。从小就在名利场里摸爬滚打的莱莉是否能收服亚历克斯呢？走着瞧吧。