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It’s 10 o’clock. Do you know where your children are?

This story first appeared in the December 28, 2009 issue of WWD. Subscribe Today.

If you are Madonna, Demi Moore, Joan Allen or Andie MacDowell, chances are they’re standing on the step-and-repeat next to you. These days, famous moms have been hitting the party circuit with unlikely arm candy: their daughters.

Just take a look at the Jaggers, who clearly believe in family togetherness. Jade Jagger posed with her youngest, Amba, at a party in London, while Jerry Hall and Georgia May Jagger sported matching crimson lips and platinum locks at the British Fashion Awards earlier this month.

Indeed, you can forget all about matchy-matchy floral Laura Ashley ensembles — these duos give a new meaning to the term “mini-me.” Witness 10-year-old Lily Sheen’s black frock, which is every bit as dressed-up as the LBD that mum Kate Beckinsale wore to the New York premiere of “Everybody’s Fine.” And Madonna and Lourdes Leon arrived hand in hand wearing Dolce & Gabbana at the recent “Nine” screening in New York City.

In some cases, it’s hard to tell who is the more seasoned red-carpet walker of the duo — just take a look at Tallulah Willis, Sadie Friedman and Sophie Curtis.

And, there is an added bonus for the junior set: If you party with Mom, there’s no risk of getting grounded for breaking your curfew.