Justin Timberlake gets Ring smackdown from Jessica Biel

Jessica Biel shocked boyfriend Justin Timberlake by performing Beyonce Knowles’ Single Ladies (Put A Ring On It) on a beach.

The 27-year-old actress was walking along Vancouver’s Kitsilano Beach with her 28-year-old beau when an autograph hunter stopped them. After asking for their signatures, the fan inquired about whether they were planning to tie the knot. As Justin fumbled for a response, his partner-of-two-years suddenly burst into the song – in which a woman chastises her partner for not proposing.

The National Enquirer magazine reports: “Mouth agape, Justin stood flat-footed in amazement as Jessica began to sing ‘If you liked it then you should have put a ring on it...’ Jessica sang and danced for nearly 10 minutes, all the while holding up her naked ring finger.”

Jessica’s rendition included lots of sexy dancing, culminating in her performing a raunchy bump ‘n’ grind routine against Justin.

When Justin queried whether she was feeling alright, Jessica strode off down the beach wagging her finger.

A source added: “Justin just kept asking, ‘What’s got into you?’ ”