Rihanna, John Mayer and Victoria Beckham Lead Today’s Star Sightings

TGIF, and thank goodness for another round of the hottest star sightings from the past 24 hours.

Rihanna looked like an Adidas billboard on Friday as she hit up an amusement park in Copenhagen with a group of friends and crew members from her world tour. The “Stay” singer is scheduled to perform in Denmark and Poland this weekend, before heading to Austria and Monaco next week.

Over in London, Victoria Beckham was all sorts of stylish in an all-black ensemble. The former Spice Girl and her daughter Harper Seven showed their support for Victoria’s son Cruz at his school’s prize-giving event.

Elsewhere across the pond, Bon Jovi flaunted his signature guitar-playing arms at the British Summer Time event in Hyde Park while Anna Wintour and Jude Law were among several stars spotted at Wimbledon.

Stateside, John Mayer donned a headscarf and serious bling as he performed on The Today Show in New York City. The “Paper Doll” singer is gearing up for his first tour in years, beginning with a show in Wisconsin on Saturday. Wonder if on-again girlfriend Katy Perry will be tagging along…

Launch the gallery, above, for even more celebrity sightings.