If you ask her, Justin Bieber was just acting his age.
The British supermodel revealed that the Canadian popster "kind of" flirted with her after she accidentally gave him an eyeful during a rehearsal for last November's Victoria's Secret Fashion Show.
"He said to me, 'You're really cute. You got nice t---s. You flashed me and my dancers and made my day," Dunn said during an appearance on The Jonathan Ross Show, per an excerpt in the Daily Mail.
The catwalker said she made the unfortunate decision to wear a low-cut top without a bra and hadn't realized when she struck her pose on the runway that her boob was visible for the whole world to see. That prompted what she said was a rather uncomfortable exchange with Bieber a little later.
"So then after the show, we was chilling with Justin and he was kind of flirting with me, and I kind of felt a bit awkward because he's this little boy. He was 18, but I'm old enough to be his older sister," the 22-year-old Dunn admitted. "It's kind of a bit weird."
The mother of one, who has appeared on the cover of such magazines as British Vogue and modeled for all the top designers, took the "Baby" singer's ogling in stride.
"I laughed after it because he was 18 at the time, and I was, like, 'Why not? Flirt with the models, do your thing,'" she said.
Bieber made headlines immediately following his Victoria's Secret appearance after he was reported to have not only flirted with the Angels, but watched The Lion King on Broadway with Hungarian model Barbara Palvin, sparking rumors the latter played a role in the heartthrob's split with Selena Gomez.
Palvin, however, dismissed the gossip on Twitter, noting she's been in a relationship for the past two years.