Los Angeles: Singer Miley Cyrus is reportedly planning a "summer wedding" to actor Liam Hemsworth. A source said the "Wrecking ball" singer's mother Tish is helping her plan the vows, reports usmagazine.com. As the couple has been keeping their relationship low-key since their reunion in early this year, the source added: "It's possible they will just run off to Las Vegas and tie the knot!" The source also claims that the pair are going stronger than ever. "They live together and are very serious. They're very much together," the insider said.