The 33-year-old singer-songwriter stopped during a performance of her track 'Piece by piece' to share the news with her fans
Clarkson, who welcomed a baby girl with husband on June 12, called her 'the greatest thing on Earth'.
Kelly Clarkson, Brandon Blackstock have been dating since a year.
The Oscars of the music industry was a star-studded affair and the musical night was high on entertainment.
Adele stood her ground atop the Billboard album chart with '21' despite 7 new album entries.
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