Britney Spears seemed to have left her lip-synching controversy far behind as she took in the sights of Sydney with boyfriend Jason Trawick and her two sons at the weekend.

The singer was in high-spirits as she and her agent boyfriend pushed Sean Preston and Jayden James around the city's Botanical Gardens in strollers.

Earlier the group boarded a luxury cruiser at Woolloomooloo Wharf for a tour of Sydney Harbour

During their boat trip Jason played with the boys on the top deck, while Britney was seen keeping Jayden entertained by pulling funny faces.

At one point, she planted a big kiss on the cheek of her youngest.

The Womaniser star - in Australia with her Circus tour - was recently slammed by (naive?) Aussie fans and critics for miming at her 'live' shows.

Britney's Circus