Last year's Britain's Got Talent final saw 90 complaints regarding Alesha Dixon and Holden's dress choices sent to Ofcom - and 200 sent to ITV, although the regulator deemed them both "suitable" for the show that year.
Holden's outfit received almost twice as many complaints as Comic Relief, in second place. The fundraising show, broadcast on BBC1 on March 24, attracted 340 complaints for "crude language" and "sexual references".
Viewers branded Comic Relief "cringeworthy" and "an utter shambles" after a series of technical glitches, X-rated gaffes and "unfunny" sketches. Several moments on the show - including when Vic Reeves flashing a fake penis at Susanna Reid before the 9pm watershed and host Russell Brand shouting "f***ing hell" live on air - sparked controversy.
Meanwhile Graham Norton "awkwardly" pressed a red-faced Cara Delevingne to explain how she had sex on a plane - despite her father sitting in the audience.
Emmerdale's March 6 episode was in third place, with 275 complaints for violence and a storyline involving intimidation towards character Aaron Dingle in prison.
The controversial episode showed Aaron being taunted by fellow inmates about the abuse he suffered at the hands of his father, Gordon, as a child.
Meanwhile, Good Morning Britain's interview with ex-English Defence League leader Tommy Robinson, broadcast on June 20, attracted 181 complaints.
The far-right activist prompted fury after accusing the Finsbury Park Mosque of "creating terrorists" just an hour after people were mown down nearby as they left evening prayers.
The figures, up to and including August 10, were released under Freedom of Information laws. The watchdog routinely publishes details of its complaints.
