Justin Beiber invites his mom onto the stage to sing her a Happy Birthday, Her hair catches on fire for a second.

Justin took to Twitter after the show to relive the incident.

Justin tweeted, "sick show in Berlin...brought @studiomama on stage 2 sing her happy bday but she lit her hair on fire with the candles. lol. i saved her"
Justin's mom tweeted thanks in return. Pattie tweeted, "Thank you all for your b-day wishes!! All I want is your prayers!! Thank u @justinbieber for the cake (& embarrassing me on stage lol). Xo"