Ariarne Titmus has criticised a sports betting advertisement.
The ad included actress Sydney Sweeney.
Titmus said it sexualised women's sport.
The advertisement drew criticism.
Other elite athletes joined the criticism.
The ad came from a sports prediction company.
As a separate matter, Titmus revealed she is engaged.
Her fiancé is Mac Powell.
She shared the message 'Forever' on social media.
The engagement news was unrelated to the ad.
Titmus's comments contributed to a public backlash.
Athletes across different sports added their voices.