Kristen Stewart Smiles at Balmain Paris Show Amid Reports of Robert Pattinson Reunion

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Kristen Stewart looked very relaxed and happy arriving at the Balmain Spring 2013 ready-to-wear collection in Paris on Thursday.

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She hasn’t been photographed looking at ease and smiling for several weeks. She wore a deer-in-the-headlights stoic expression at the Toronto Film Festival, her first public appearance since the scandal involving her Snow White and the Huntsman director Rupert Sanders. (She publicly apologized immediately after the photos of her with Sanders hit the news. Afterward, Stewart and Pattinson moved out of the house they shared.).

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At the Balmain runway show, the 22-year-old actress wore the label head-to-toe: a pair of printed floral jeans, a black top, a bright yellow leather jacket and ankle boots,

According to Us Weekly, Stewart has reunited with boyfriend and Twilight costar Robert Pattinson. Some theorize this reunion could explain her new upbeat attitude.But the course of true love seldom runs smoothly, especially in Hollywood.

The only thing absolutely certain right now is that the couple will appear together for the Twilight: Breaking Dawn Part 2 premiere.

"These actors are professional and they have not missed a single event because of anything going on in their personal lives," a source close to the actress tells The Hollywood Reporter.

And there’s also a pretty good chance Stewart will wear a little something from Balenciaga to the premiere.

Tell us: Are you glad that the lovebirds are back together?