The baby boom is still going strong in Hollywood, adding to the list of births this week was supermodel Adriana Lima. The sexy and talented Victoria's Secret model and her husband Marko Jaric are now the proud parents of a beautiful baby girl named Sienna

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Sienna is the second child for Adriana and Marko, who also have a two-year-old daughter named Valentina. And of course, like any other gushing mom, Adriana took to her Twitter account to announce the exciting news. Adriana tweeted, "Marko and I are overjoyed to welcome Sienna into our family and Valentina is looking forward to becoming a big sister!" 

Sienna joins the growing list of celebrity babies born this month, which includes Snooki's son Lorenzo Dominic LaValle and Nick Lachey and Vanessa's son Camden John Lachey.
Who do you think will give birth next?
Photo courtesy of Fame/Flynet