Miller, 27, is said to have met rugged DJ George Barker earlier this year, and that she had taken him on a special date to the Secret Garden Party last month. The two met up at 2am within the grounds of the Cambridgeshire gig, and enjoyed a night of music and revelry at the festival.
The couple are now planning their first holiday together. “Sienna and George is still a pretty casual, low-rent thing but they're both really happy," the Mirror quoted a source as saying.
“George is a good, all-round guy and they have friends in common. He's also single which is a massive coup. George is really into his music and has been introducing Sienna to new stuff, and even given her a go on his decks. They've talked about a holiday together and Ibiza has been discussed. It's early days but things are looking great," the source added.