Casey, 29, wore the gorgeous floor-length gown to the Expendables 3 premiere, in London's Leicester Square, and happily posed for waiting photographers.
The glamour model kept her long brunette hair loose in a centre parting and topped off her Nazz Collection frock with a pair of black strappy sandals.
After heading inside to watch the film, Casey took to Twitter and told her followers: "Loved the @Expendables3 premiere! Great action movie, lots of laughs too."
Despite her dress having a plunging neckline, Casey spoke out yesterday and revealed that she has decided to have a breast reduction.
Casey's breasts fluctuate between a cup size GG and FF and, although she has made a career off the back of her curves, the star admits she feels insecure about the way she looks.
Writing in her column for the Daily Star, Casey said: "Despite a confident smile and self-assured pose on the red carpet or in a photoshoot, I do have insecurities too. For me, my boobs have always been a huge insecurity."
Casey will be having a breast reduction later this month.
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