The actress and her Sin City co-star Jaime King spent the day testing out a range of options and at one store looked like they were about to nod off at one point.
With a one-year-old daughter, Jessica probably doesn't get to spend as often as she'd like in bed - and tiredness may account for her grumpy look.
Jessica, 28, was clearly taking the task seriously and studied the products for some time while Jaime looked on.
Last month the Fantastic Four star found herself in hot water when was forced to apologise to a charity for a poster being attached to one of its billboards.
The Hollywood star was involved in an incident where posters of great white sharks were pasted around Oklahoma City to draw attention to the species' declining numbers - and one was plastered over a billboard for the charity United Way.
Jessica said sorry for her part in the campaign and has now donated an undisclosed sum to the United Way of Central Oklahoma, the charity announced.
A spokeswoman said her lawyer asked the charity not to disclose the amount, but that the actress qualified for a programme that recognises donors who give 500 dollars or more.
The spokeswoman deemed it "generous" and "appropriate". Jessica had been in Oklahoma City filming the movie The Killer Inside Me.
Police have said she will not face criminal charges.
