Whilst Blake Lively as Serena van der Woodsen has been sporting an eclectic mix of styles and designers in Paris whilst shooting the 4th season of ‘Gossip Girl’, it looks like Leighton Meester as Blair Waldorf only has eyes for Oscar.

Blair has been wearing many Oscar de la Renta Spring 2010 and Pre-Fall 2010 looks whilst on set.

The famous Avenue Montaigne was the backdrop for a scene where Blair is wearing an orange Oscar de la Renta Pre-Fall 2010 organza pleated strapless gown with a rise and fall hem.

Leighton is wearing flip flops in this picture – between takes – but in the pictures below you can see she’s wearing Christian Louboutin bow sandals.

I love the sweet romanticism of the gown, but the fuchsia pink Roger Vivier clutch pops way too much which I find distracting.

Blake and Leighton were spotted filming outside the Chanel store on Avenue Montaigne in Paris.

Blake was wearing the Suno pants, Dries van Noten heels and Fendi ‘peekaboo’ bag look we saw last week. But it’s Leighton in the forefront of this picture wearing an Oscar de la Renta Spring 2010 dress.

The peachy chiffon sleeveless mini dress has a cute ruffled skirt and an embroidered waistband.

Her orange Nancy Gonzalez bag and Christian Louboutin heels perfectly complement her floaty dress.

Next up was a lime green safari-esqe Oscar de la Renta Spring 2010 look consisting of a sleeveless jacket and shorts.

The white cotton eyelet trim makes the look ultra feminine, and so very Blair.

The only thing missing is Blair headbands from all these looks, but I guess she’s evolved past that look.

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Credit: Style.com, Bauer Griffin & Fame Pictures