Lady Gaga in Brandon Maxwell in New York, New York, August 2016.

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Who: Lady Gaga.

When: Wednesday, August 3.

Where: Tony Bennett's birthday party in New York, New York.

What: A custom strapless black velvet gown by Brandon Maxwell.

Why: First the First Lady for a state dinner, now Lady Gaga: Brandon Maxwell is having a great week. He's been styling Gaga since Nicola Formichetti passed him the baton in 2013, and he has helped usher in her Tony Bennett-collaborating, old Hollywood-inflected look (designing it along the way). In black velvet, an asymmetrical strapless neckline, and with a thigh-high slit, the look is glamorous and elegant — the perfect gown for Bennett's 90th birthday celebration, where Lady Gaga performed Wednesday night.