Ariarne Titmus spoke out against a sports betting advertisement.

The ad starred actress Sydney Sweeney.

Titmus claimed it sexualised women's sport.

The advertisement drew criticism.

Other elite athletes added their voices.

The ad came from a sports prediction company.

In separate news, Titmus announced her engagement.

Her fiancé is Mac Powell.

She shared the message 'Forever' on social media.

The engagement news was unrelated to the ad.

Titmus's comments were part of a public backlash.

Athletes from different sports joined in.