“Cover up or don’t board!” That’s the stern warning Olivia Culpo says she got before getting on her American Airlines flight to Cabo San Lucas. The 29-year-old, who was crowned Miss Universe in 2012, slammed the airline after her outfit — a sports bra with biker shorts and a long black cardigan — was deemed inappropriate for boarding. Luckily, her boyfriend, Carolina Panthers running back Christian McCaffrey, was a gentleman and gave her his gray sweatshirt so she could cover up.