Ariarne Titmus has criticised a sports betting advertisement.
The ad included actress Sydney Sweeney.
Titmus argued it sexualised women's sport.
The advertisement drew criticism.
Other elite athletes also spoke out.
The ad was for a sports prediction company.
As a separate matter, Titmus announced her engagement.
Her fiancé is Mac Powell.
She posted the word '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 added their voices.