Victoria’s Secret model Alessandra Ambrosio sent a present to her fans on New Year’s day, a stunning video showing off her bikini body. It may be the last look before the pregnant supermodel’s baby bump starts showing.

Unbeknownst to the audience, the Brazilian beauty was two months pregnant when she walked in the Victoria’s Secret Fashion Show in New York in November.

The 30-year-old released the video on Facebook yesterday (Jan. 2). It shows her wearing a revealing swimsuit in various sultry poses. “Hi everybody!!! I have a gift to all of u: a new video to celebrate the new year!! coming out tomorrow!! stay tune!! xo Ale” she wrote on her page.

Check out Alessandra’s photos; click to enlarge.

The Brazilian native wears a backless green and blue, tie-dye-style swimsuit, featuring high cut sides and an extreme plunging neck.

Alessandra also posted a photo on the beach with her three-year-old daughter Anja Louise, who rubs her tummy with a huge smile. “Anja, Jamie and I are overjoyed and extremely appreciative of all the wonderful wishes we’ve received!!” she wrote with the photo.

“2011 has been a year filled with incredible gifts and this is the ultimate blessing!!” she added. “Anja has filled our lives with love and we can’t wait to welcome the new baby into the family this spring!!” she added.

Pregnancy seems to be infectious among VS models. Miranda Kerr gave birth last year and Doutzen Kroes gave birth in March. Angel Lily Aldridge, wife of Kings of Leon’s Caleb Followill, also is pregnant.

Heidi Klum, Adriana Lima and Karolina Kurkova announced pregnancies in 2009.

Incidentally, the VS Fashion Show pulled in 10.3 million viewers for its 10 p.m. time slot, its biggest audience since 2002 when supermodels like Klum and Gisele Bundchen dominated the catwalk.

Alessandra’s video by Jerome Duran is titled Beautiful. Check it out below and some photos from an earlier shoot.