Selena Gomez Looks Happy, Flashes Cleavage After Justin Bieber Breakup

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Actress Selena Gomez attends the Alberta Ferretti and Vogue Limited Edition Collection 2013 Fashion Show and dinner hosted by Alberta Ferretti and Lisa Love to benefit the "Protect a Child" Campaign by Jordan River Foundation at Chateau Marmont on January 10, 2013 in Los Angeles, California. 

Eat your heart out, Justin Bieber.

In her first post-split appearance, Selena Gomez showed her ex what he's missing by wearing a cleavage-baring, turquoise Alberta Ferretti dress in L.A. Jan. 10.

At the Vogue event in the designer's honor, an upbeat Gomez chatted with Chelsea Lately host Chelsea Handler, 37. The Spring Breakers star has yet to publicly comment on her split with Bieber, 18.

PHOTOS: A timeline of Selena Gomez and Justin Bieber's romance

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The exes were first linked in November 2010 after a "cuddly" IHOP date, though they denied dating until the spring of 2011. The Wizards of Waverly Place actress and the "As Long as You Love Me" singer called it quits in November 2012.

"Selena broke up with Justin about a week ago. It's been a really challenging experience over the last year because of their crazy schedules," an insider told Us Weekly at the time. "Selena definitely had some major trust issues with Justin."

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The pair soon reconnected and were spotted kissing and holding hands at an American Music Awards afterparty weeks later. While vacationing in Puerto Vallarta, Mexico, for a New Year's trip, "They had another huge fight, and Selena won't forgive him," a source reveals in the Jan. 21 issue of Us Weekly (out now). "Selena is done with him."

In the wake of their split, Bieber was photographed smoking what appears to be marijuana on Jan. 2, just one day after a paparazzo was killed chasing his Ferrari. (Bieber was not in the vehicle at the time.)

PHOTOS: Selena Gomez's sexy style

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Bieber is now being accused of assaulting Moshe Benabou, an ex-member of the Israeli army who worked as his bodyguard from March 2011 to October 2012. Benabou is seeking unspecified damages for assault and battery, in addition to $420,000 in unpaid overtime.

A source close to Bieber, however, insists the "whole thing is baseless and meritless. Justin never hit him and couldn't! He is so much smaller. This whole thing is a lie."

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