"David was very involved in the advert including doing most of the stunts," stated an H&M rep, according to E! News. "Due to his tight schedule a body double was used in smaller parts of the video."
So which parts features David's butt double and which were the real Becks? Our friends at HuffPost UK break it down, pointing out that in a few of the shots from behind, Beckham's tattoos seem to have mysteriously disappeared from his right arm.
Oh, and then there is this fairly damning picture:
In a Twitter interview with fans, the football star tweeted that he did most of his own tricks:
But clearly not all of them. We recommend another viewing of the ad for, uh, research purposes. Oh, and the behind-the-scenes video. You can never be too sure of these things.