Britney Spears was shopping for a pregnancy test Tuesday, but it was "for her friend," she told TMZ.

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Photos released by Spears' paparazzo-boyfriend Adnan Ghalib's photo agency, FinalPixx, and posted on People magazine's Web site show the pop star and Ghalib at a Studio City, Calif., Rite Aid store together, with Spears scanning the shelves of pregnancy tests.

Brit's pal Sam Lutfi told "Access Hollywood" the couple was "toying with the paparazzi" by posing for the pics.

"It’s all bull---. They’re just toying with the paparazzi," he said.

Click here to see the pics on People's Web site.

Sources also told PageSix.com that Spears is planning to sue photographer Dani Brubaker, who took family portraits of the star and her sons in November and recently sold the photos to OK! magazine for a reported fee of "one million dollars."

Spears is expected to claim that while Brubaker did not sign a confidentiality agreement and has the copyright to the images, there were numerous e-mails and text messages that explicitly state the pictures were never to be made public.

Though Brubaker has said she will donate the proceeds to a children's charity, there is no confirmation of this having taken place, Page Six reported.

The former princess of pop stirs up controversy wherever she goes lately.

On Wednesday, four paparazzi were arrested on charges of reckless driving while chasing Spears' car in the San Fernando Valley.

Los Angeles police Lt. Mario Munoz said officers observed several cars following a white Mercedes-Benz around 11:30 p.m. in Mission Hills.

The cars were following Spears' car too closely and traveling at unsafe speeds. They also made several unsafe lane changes, authorities said.

Munoz said officers stopped the Mercedes, interviewed Spears and released the 26-year-old pop star after verifying her driver's license.

But the four photographers in the cars chasing her were booked for investigation of reckless driving.

On Sunday, Spears grabbed dresses from the racks at the Betsey Johnson store at Westfield Fashion Square in Sherman Oaks and disappeared into a dressing room with Ghalib, Life and Style magazine reported.

Moments later, she came out completely naked.

"I was blown away. Britney's private parts were right in front of me!" a store employee told Life & Style. "I grabbed a dress to cover her, and she screamed, 'Get away from me! Don't you [bleep]ing come near me!' ... Then she disappeared in the dressing room with Adnan for 45 minutes. They were making weird noises. It was disgusting."

When Spears and Adnan emerged, "I couldn't understand a word she was saying. She was slurring and spitting and talking with a British accent," the employee said. "Her face was covered with cold sores and acne, and her scalp was patchy. I wanted to help her, but she was so mean that I left her alone. Then she muttered, '[bleep] you!' and left the store."

Spears is fighting to regain visitation rights to see her two sons with ex-husband Kevin Federline, Sean Preston, 2, and Jayden James, 1.

A Superior Court commissioner decided Monday to keep in effect an earlier order suspending Spears' right to visit her sons and keeping them in Federline's custody.

Another hearing was scheduled for Feb. 19.

The Associated Press contributed to this report.