It's not easy to look glowing and glam when you've got a little baby at home.
But you would never know it to look at January Jones.
The Mad Men dazzler, who has a seven-month-old son called Zander, looked drop dead gorgeous in a canary yellow Alexander McQueen gown, leading the yummy mummy contingent at the Metropolitan Museum Ball in New York.
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She was joined by Beyonce Knowles, who showed off her post-baby body in a show-stopping Givenchy dress.
The revealing look featured a sheer bodysuit covered in black lace and crystal embellishments, and a dramatic feathered train.
Bootylicious B has clearly had no problems in regaining her figure since welcoming Blue Ivy with Jay-Z in January.
Other hot mamas on the red carpet included Giselle Bundchen and Marion Cotillard.
Also leaving the children at home for a glam night out included Heidi Klum, Gwyneth Paltrow and Cate Blanchett.