Ariarne Titmus criticised a sports betting advertisement.
The ad featured actress Sydney Sweeney.
Titmus argued it sexualised women's sport.
The advertisement provoked a backlash.
Other elite athletes also spoke out.
The ad promoted a sports prediction company.
As a separate matter, Titmus announced her engagement.
Her fiancé has been named as Mac Powell.
She shared the message 'Forever' on social media.
The engagement news bore no relation to the ad.
Titmus's comments contributed to a public backlash.
Athletes from various disciplines joined in.