When Elsa Hosk arrived on set for Victoria's Secret 's 2026 Mother's Day campaign , she had a special plus-one in tow: Baby No. 2. The model still hadn't told her 8.5 million followers that she's pregnant with her second child. So the images she'd take later that day—flouncing in a mix of Victoria's Secret lingerie and pieces from her ready-to-wear brand, Helsa, playing with her first daughter, Tuulikki, while her fiancé cheered her on, all with her growing belly proudly on display—would become the official pregnancy announcement she first shared exclusively with Marie Claire . Hosk has fronted dozens of campaigns in her modeling career. She was a regular on the original VS Fashion Show runway. But this shoot, her first Victoria's Secret gig since 2018, felt like a new sort of milestone. "It was the first time that I was on set with the belly out, not hiding it, and everyone was just so hype—like cheerleading energy," she says.…