Christina Aguilera shows off cleavage post-split

Christina Aguilera who touched down Hawaii one day after filing for divorce from Jordan Bratman didn't seem to be shy at her first public appearance since the shocking split announcement.

Christina Aguilera touched down in Honolulu, Hawaii - one day after filing for divorce from Jordan Bratman in California.

And the singer, 29, didn't seem to be shy at her first public event since the shocking split announcement.

Aguilera was all smiles as she flaunted her curves and cleavage in a skin-tight, hot pink dress and five-inch stilletto heels at a barbecue and concert to celebrate the opening of The Waikiki EDITION.

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A source said that Aguilera arrived at the bash with an entourage of 8.

The star and her crew kept it low-key at the bash -- sipping champagne and talking quietly on chaise lounges in an oceanside VIP area. The group stayed for less than 45 minutes, departing around 8:40 p.m.

"She knows everyone knows about her pending divorce. She's trying to show she's OK., confident, and going to be alright," Usmagzine.com quoted a party observer as saying.