'Supergirl' Serena nabs phone thief

Serena Williams chased down a would-be telephone thief at a Chinese restaurant that had the 34-year-old American tennis star comparing herself to Supergirl.

The 21-time Grand Slam singles champion detailed her adventure on Wednesday in a Facebook posting complete with her wearing a Supergirl outfit and sending a message for people to channel their inner superhero.

And another message was clear - mess with Serena Williams at your own peril.