Split between two major shows, the former Spice Girl could only attend one glamorous event last night and that was the New York City post-show party for America's Got Talent, which she judges.
Mel B walked the red carpet in a striking monochrome crop top and matching trousers, teamed with black heels, smoky eye make-up and slicked back hair.
The star judges on AGT alongside supermodel Heidi Klum, comedian Howie Mandel and radio host Howard Stern, while Mariah Carey's estranged husband Nick Cannon is the host.
Meanwhile, over in the UK, the rest of the X Factor team was gathering for the show's official press launch.
Cheryl Fernandez-Versini, Simon Cowell, Louis Walsh, Sarah-Jane Crawford and Dermot O'Leary gathered at the Ham Yard in London for a glitzy event ahead of this weekend's launch show.
X Factor returns for its 11th series on Saturday, 30 August on ITV1.
Watch the official X Factor 2014 trailer below:
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