Her look was bold for the Billboard Women in Music 2024 event on March 7. Katy Perry donned a red two-piece outfit with a lace-up back that showed off a butterfly tattoo on her lower back, as well as quite a bit of her bum. But it was actually her midriff displayed in the front that got fans talking — and speculating whether or not the Hot N Cold singer was expecting, even amid her relationship woes with Orlando Bloom, RadarOnline.com has learned. “Is that a pregnant gut?” one user asked on Instagram, while others more confidently proclaimed, “Katy looks pregnant” and “I knew she was pregnant!…