Jessica Simpson had another one of her infamous “blonde moments” on a recent outing at Niketown in Beverly Hills. The notoriously simple-minded singer was left red-faced when she went to the establishment in search of Adidas sweats and had to be told by a sales rep that Niketown sells only Nike apparel.

“Jessica asked the sales associate helping her where the Adidas sweat pants were,” a Star Magazine witness giggles.

“The guy thought she was joking,” adds the witness.