It's two months away before Victoria's Secret launches their annual fashion show in New York. Like all of their previous shows, the famous brand gets ready to flaunt their sexiest models in their hottest lingerie.

New moms Adriana Lima and Alessandra Ambrosio work double time to shed off their remaining post baby fat to get ready to walk down the runway for this year's Victoria's Secret Fashion Show.

With Adriana's return on the fashion show to wear her angel wings, the 31-year-old model seems anxious to be back on shape fast. Last Sunday she tweeted a picture of herself after a tedious workout in Miami. Adriana's picture came in just weeks after she gave birth to her second baby, Sienna.

"Marko and I are overjoyed to welcome Sienna into our family, and Valentina is looking forward to becoming a big sister," she released in a statement.

Apart from her, Alessandra who also gave birth to her second child is often pictured along the streets of Los Angeles in her workout clothes. In a photo she posted on her Twitter account, it looks like she's also involved in a workout video by Victoria's Secret, as well the brand's latest gym clothes line.

Meanwhile, Victoria's Secret confirmed that Justin Bieber, Bruno Mars and Rihanna will be providing the music for this year's event. Last year, Nicki Minaj, Kanye West and Maroon 5 performed during the show.

Last Tuesday, Victoria's Secret announced the schedule for their annual fashion show through their Facebook page. The sexy fashion show will air on December 4 at 10 p.m. on CBS. It will once again take place in New York City.

See more of the sexiest Victoria's Secret Angels as they walk down the VS Fashion show runway.

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Model Adriana Lima walks the runway at the Victoria's Secret Fashion Show 2007 in Hollywood, Calif.

Adriana Lima, Alessandra Ambrosio Victoria's Secret Fashion Show 2011

Adriana Lima

Model Miranda Kerr presents a creation during the Victoria's Secret Fashion Show at the Lexington Armory in New York November 9, 2011. REUTERS/Lucas Jackson

Model Doutzen Kroes presents a creation during the 2009 Victoria's Secret Fashion Show in New York.

Model Candice Swanepoel presents a creation during the Victoria's Secret Fashion Show at the Lexington Armory in New York

Model Alessandra Ambrosio walks the runway at the Victoria's Secret Fashion Show 2007 in Hollywood

Toni Garrn presents lingerie during the Victoria's Secret Fashion Show at the Lexington Armory in New York November 9, 2011.