Punk rocker Avril Lavigne shows off her breast stroke, as she goes swimming with a female pal in Miami. The singer frolicked with her brother’s girlfriend in the hotel pool, wearing a bikini as hot as the weather. Avril dived right in as her lucky hubby Sum 41’s Deryck Whibley looked on from a sunlounger.

Continuing her sunny vacation, away from the northern winter blahs, Avril Lavigne was spotted taking a dip in the pool at her resort in Miami, Florida yesterday.