1 At the WTA's Tennis on the Thames event, Serena Williams appeared rocking overalls.2 Also at the special WTA party in London, Petra Kvitova got to meet Monica Seles.3 Contrasting in height and outfit colors, Garbine Muguruza and Dominika Cibulkova wowed together.4 Noami Osaka glowed in a long floral dress.5 Andrea Petkovic dominated the fashion scene at The Boodles exhibition event.6 Ahead of Wimbledon, Grigor Dimitrov put forth his best preppy look for a campaign.