After being in hiding for a few days, Pippa Middleton the younger sister of the Duchess of Cambridge Catherine Elizabeth Kate, finally stepped out on Friday.

Pippa had reportedly grounded herself in her family's Central London home ever since the gun incident took place in Paris.

The 28-year-old Pippa was seen heading toward the Rosano Ferreti Hair Spa. This is the first time she has stepped out since she was photographed in Paris last Saturday when she seemed to be laughing as she sat in the front seat of an Audi convertible alongside the driver, who pointed what appeared to be a semi-automatic pistol at a lurking photographer, US Weekly reported.

Check out her pictures here.

That photograph of hers last Saturday stirred controversy, but Middleton and her male friend are not in any trouble as French police said that they couldn't launch an investigation based on photo proof alone.

One of Pippa's friends, Viscount Arthur de Soultrait, who was in the car with her when the gun incident took place, released a statement to US Weekly last Wednesday.

Last Saturday I was in a car with Philippa Middleton, and we were being followed by paparazzi, Soultrait explained.

The car was being driven by a friend of mine, whom Pippa had only met a few hours before, Soultrait said.

As a joke, my friend brandished a toy pistol in their direction. Obviously Philippa had no idea that he was going to do that and told him to stop immediately. She did not find it funny. I regret enormously that this incident happened, and especially that Pippa has been subject to the subsequent attention through no fault of her own. I have apologized to her for this, he added.

Pippa's sister's royal in-laws, however, are reportedly not pleased. This is embarrassing for them, a royal source told Us Weekly. The Duchess of Cambridge is supposedly among the disgruntled. Pippa's gun photo has put Kate in a very difficult position, the source added.

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