Billy Ray Cyrus: 'Miley Is Happy After Liam Hemsworth Split'
Achy Breaky Heart star says daughter is smiling more since break-up...
The pair announced last month that they had decided to end their engagement, having been together since 2009.
Country star Billy Ray told Entertainment Tonight: "All I know for sure is I heard my daughter say today she's the happiest she's ever been in her life immediately following [the split].
"That's when I saw Miley being so happy. Somewhere along the stress and strain of different things I didn't see her smiling as often for a little while, and all of a sudden she's like the sun and when she smiles it's light.
"Everything happens for a reason and the main thing for me, as Miley's daddy, is she's happy."
Miley has denied rumours linking her to her record producer and to Juicy J since the split.
And she has been keeping busy cultivating a friendship with Britney Spears.