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Beyonce kicked off her Mrs. Carter Show world tour Monday in Serbia with some sexy costume changes.

In a nod to another diva - Jennifer Lopez - Beyonce donned a low-cut full-length blue sequined catsuit.

The 31-year-old singer also rocked a number of sparkly bodysuits in Belgrade, including a black, beaded one that she teamed with a Janet Jackson-inspired military cap with cat ears.

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But it was her gold-sequined bodysuit which has been getting the most buzz. Although she appeared to be showing off her assets, the bodysuit was actually adorned with faux breasts - complete with nipples.

Beyonce also showed plenty of leg in five custom outfits by Emilio Pucci's creative director, Peter Dundas, including a pair of high-waist shorts featuring the designer's signature 1960s psychedelic print. The shorts were teamed with the singer's favorite flesh-colored fishnet tights.

Beyonce paired another Pucci design, a short, black, double-breasted leather coat, with thigh-high boots and a fedora.

Not all her outfits were designed by Pucci, however. She looked Sasha Fierce in a white beaded crystal and pearl bodysuit by Ralph & Russo Couture.

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