"Travis I'm pregnant!" Kourtney Kardashian announces pregnancy in viral style

The first born of the Kardashian 'Klan' announced she was pregnant during the band’s concert at Los Angeles’ BMO Stadium on Friday night.

While confirming the news, Kardashian shared a short video of the ecstatic moment on her Instagram account - in an Instagram collaboration with her husband.

“Someone’s having a baby! "shouted Baker's bandmate Mark Hoppus before the drummer abandoned his tools of trade, hopped off stage and excitedly embraced Kardashian with a deep hug.

After sharing a passionate kiss, Kardashian yet again lifted the sign to wild cheers from the enthralled crowd.

The sign is an apparent nod to a moment in Blink-182′s “All the Small Things” 1999 music video where a woman holds up a “Travis I’m Pregnant” sign.

Kardashian who has three children with ex-partner Scott Disick (Mason, 12, Penelope, 10, and Reign, 8) has been open about their fertility journey, sharing in a episode of 'The Kardashians'  that they had finished trying vitro fertilisation (IVF).

"We are officially done with IVF," she said in a confessional. "We would love a baby more than anything, but I really believe in what God has in store for us. If that's a baby, I believe it will happen."