The singer, 33, was joined at the event by Cardi B, 32, who is pregnant with her fourth child, and first with NFL star Stefon Diggs, as they work to raise awareness for HIV.
Demi Lovato flashed her toned midriff as she led the stars attending the first-ever National PrEP Day in Los Angeles on Thursday.
The singer, 33, was joined at the event by Cardi B, 32, who is pregnant with her fourth child, and first with NFL star S... [2314 chars]