Sibling denim brands William Rast and J Lindeberg are hosting their first-ever warehouse sale this weekend, at downtown’s Cooper Building. Good news on its own. But because we’re tight with J.T. (um, no not really), shoppers who mention “Style Section L.A.” at the cash register will receive 10 percent off their entire purchase.

You need to register online for an invite, at thewarehousesale.com, but then you’re behind the velvet ropes. Further deets:

Who: William Rast and J Lindeberg
What: Warehouse sale
Where: Cooper Building, 860 S. Los Angeles St., Los Angeles, 8th Floor
When: Saturday, Dec. 11, 11 a.m. to 7 p.m.; Sunday, Dec. 12, 10 a.m. to 5 p.m.

Photo: Erin Wasson looking hella tough in William Rast. Courtesy of William Rast.