The actress posed on the red carpet in an outfit so low cut you could nearly see her belly button. The star wore a bronze silk Rubin&Chapelle jacket and pants with a yellow blouse featuring a plunging neckline - and exposing quite a bit of cleavage.
Helfer came out in support of her former "Battlestar Galactica" co-star Katee Sackhoff, who appears in "Riddick" alongside Vin Diesel.
The film centers on Riddick, who is left for dead on a sun-scorched planet. He finds himself fighting to survive against alien predators and is forced to seek help from mercenaries, who want his head as a bounty.
"Riddick" hits theaters on Sept. 6.
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