The adorable kids stole the show over the weekend while joining their mum at an event for her Jessica Simpson Collection in Dallas, Texas.
Maxwell, two, and Ace, one, were dressed smartly for the occasion and looked rather thrilled to be joining their famous mum in front of the cameras!
We reckon these two are ones to watch. Disney, perhaps? Future Nickelodeon stars?!
Oh, and little Maxwell was showing off one of her mum's fashion designs for Jessica Simpson Girls!
Jessica was joined by younger sister Ashlee Simpson Ross and Ashlee's son Bronx Mowgli, who looked a little camera shy as he hid behind his singer mum.
In contrast, little Maxwell and Ace got stuck in in front of the camera, even helping their mum sign a few photos. Let's hope none of that black marker got over their smart clothes!
And while Jessica was busy with fans and promoting the launch of her Jessica Simpson Home Collection, the kids hung out with their former footballer dad Eric.
This will be Jessica and Eric's first Christmas as a married couple.
Engaged since November 2010, they tied the knot at a romantic ceremony over the Fourth of July weekend this year after previously postponing two planned wedding dates after Jessica fell pregnant.
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