8 Addison Rae starred in Lucky Brand’s new denim campaign. Lucky Brand Another day, another sizzling celebrity denim ad. Addison Rae posed in her dangerously low-slung jeans — sans shirt — for a Lucky Brand advertisement featuring the “Diet Pepsi” singer. The TikTok star-turned-singer, 24, smoldered in the heritage denim label’s new Addison Ultra Low Rise Flare ($129), which she co-designed, and nothing else. In one racy image, Rae pulled her denim down to her ankles and bent over, wearing a white crop top and coordinating underwear. In others, she wears a denim shirt with just two buttons done up....