Gossip frontwoman Beth Ditto put fans on menstruation watch at a gig in London on Saturday night.
During the band's sold-out show at London's HMV Forum, the 28-year-old admitted to the crowd that she started her period four minutes before the gig.
She then asked them to look out for any suspicious stains on her clothing.
According to the NME, she said: "I started my period about four minutes ago and I was like 'Oh no!'"
She then asked them to go on "bleed watch" before adding, "If you see period stains you let me know!"
Nice.
You can see the show in photos below: