Both Shania Twain and Valerie Bertinelli kicked off 2011 by walking down the aisle with their respective beaus on New Year's Day!

Twain married Frederic Thiebaud on Saturday at a private mansion in Rincon, Puerto Rico. After the couple exchanged vows, the entire wedding sang "All You Need Is Love." The festivities also included a fireworks show, and Shania performed at the reception.

Ironically, Shania's ex-husband Robert Lange, left Twain for Thiebaud's wife in 2008.

Valerie Bertinelli, meanwhile, married businessman Tom Vitale, her beau-of-six-years who she got engaged to in May, at her home in Malibu on Saturday. Among the guests? Bertinelli's ex, rocker Eddie Van Halen!

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