Former *NSYNC star Lance Bass has let rip at US authorities for refusing to let gay men donate blood.
The ex-boybander - who came out as gay in 2006 - is desperate to do his bit in the wake of the Las Vegas massacre, but says he is being blocked from helping.
"How is it STILL illegal for gays to donate blood??!! I want to donate and I'm not allowed," Lance, 38, tweeted, following the American Red Cross' appeal for blood donations after more than 59 people were killed and 527 injured when Stephen Paddock opened fire on the crowd at a country music festival on Sunday.