The 44-year-old reality TV star revealed the news while her Blink-182 drummer husband, 47, performed on stage in LA.

Holding up a huge sign with the words "Travis I'm pregnant" the star beamed and jumped up and down from the crowd.

A video, posted to the star's Instagram account, shows Barker making his way off-stage to embrace his wife.

The sign is a reference to the music video for Blink-182's 1999 hit All The Small Things, in which a woman holds up a sign reading the exact same.

It remains the band's most successful song, having reached number two in the UK charts.

Kardashian and Barker married in May last year.

They held a small ceremony in California before a luxurious weekend celebration at L'Olivetta, a villa owned by Dolce & Gabbana in Portofino, Italy, surrounded by their closest friends and family.

The reception was hosted at a nearby 16th-century castle, Castello Brown.

The pair, dubbed "Kravis", both have children from previous marriages but have publicly spoken about wanting a child together on the family's reality show.

Kardashian shares three children - Mason, 13, Penelope, 10, and Reign, eight - with ex-boyfriend and Keeping Up With The Kardashians co-star, Scott Disick.

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Meanwhile, Barker has two children, Landon, 29, and Alabama, 17, with his ex-wife Shanna Moakler.