Serena Williams looks lovely in slinky red dress and crystal-embellished heels

A stark switch from tennis shoes: Serena totters along in $4000 heelsRed hot: The tennis champ showed off her athletic figure in a tight red dressKaraoke queen: Serena confesses that she is also a diva off of the court favouring Adele when it comes to her favourite pastime, karaoke