The Bachelor's Brittany Hockley strips off into a blue bikini and sunbathes at Bondi Beach

Laura Csortan and Osher Günsberg at a book launch in Sydney's Bondi

Big Brother's Katie Williams grabs lunch with co-star Brenton Balicki in Bondi

Justin Hemmes' glamorous model girlfriend Madeline Holtznagel, 24, looks downcast at Bondi event