Beyonce's twins, Rumi and Sir, make rare appearance in new Ivy Park ad

Beyoncé's Ivy Park is a family affair.

A new advertisement for the athleisure clothing line dropped Wednesday. It featured the powerhouse singer and the three children she shares with husband Jay-Z: 9-year-old Blue Ivy and 4-year-old twins Rumi and Sir.

"The rodeo isn’t just for the grown ups," the company teased on Instagram. "Introducing IVY PARK Kids."

The 36-second clip promoting the upcoming clothing drop channels the rodeo while showing off the kids collection. A rare glimpse of the twins is given in the first few seconds, with the Beyoncé appearing with them in the center of a rodeo ring while they all rock royal blue ensembles. Later, she appears with Blue in matching pink-and-brown cow-print outfits.

This is the first kids collection for the brand, something the Grammy winner recently expressed excitement about while speaking to Harper's Bazaar.

"I'm excited that IVY PARK x adidas will now feature kids' clothing with this drop," she said. "On our family vacations, we love to coordinate our outfits. My kids are usually on set with me for shoots, and we'd find ourselves putting them in extra-extra-smalls so we could match. So, it is a natural progression for IVY PARK to introduce a selection of key silhouettes in children's sizing."

The Ivy Park Rodeo collection drops Aug. 19.