It appears she was told to change by officials.
Venus Williams Was Made To Change Her Bra At Wimbledon Because It
Wimbledon 2017: Venus Williams pink bra code violation
Wimbledon are relaxing their all-white dress code to ease the
Venus Williams changes bright pink bra mid-match after breaching
Venus Williams Was Made To Change Her Bra At Wimbledon Because It
Why do tennis players have to wear all white at Wimbledon?
The Scandals of Wimbledon 2017
When drama took over tennis! Temper tantrums, flying ants, crash landings and much more at Wimbledon - The Economic Times
Why Wimbledon Players Have to Wear All White
Women welcome change to all-white Wimbledon dress code in bid to
Venus Williams had to change bra mid-match after complaints from Wimbledon officials - Irish Mirror Online
Wimbledon 2017: Venus Williams BREAKS rules with pink bra in first
