Jacqui Ainsley vamps it up in a revealing suit and slicked hair for Sherlock Holmes premiere

Jacqui Ainsley stole the spotlight from her partner at his big Hollywood film premiere earlier this week in a slinky, ultra-feminine red gown that showed plenty of skin.

Back in London tonight, she opted for a dramatically different look in a mannish sequinned suit.

The 30-year-old model still managed to add a sexy touch to the ensemble by going shirtless, and bra-less, beneath her blazer, giving more than a glimpse of decolletage.

Suited and booted: Jacqui Ainsley looked stunning at the premiere of her partner Guy Ritchie's film Sherlock Holmes: A Game of Shadows in a sequinned suit

Dramatic: The model slicked back her hair in a wet-look style and wore red lipstick and heavy false eyelashes

Changing it up: Jacqui's mannish suit was a far cry from her ultra-feminine backless gown at the LA premiere days earlier

Affectionate: The director planted a kiss on his girlfriend inside the screening, held at the Empire Leicester Square

Smart casual: The film's stars Robert Downey Jr and Jude Law added touches of casual to their suits - Law in a black beanie and Downey Jr with black and white trainers

Boys club: Downey Jr has revealed that he is 'really close' to Law, but that he and Ritchie are more like brothers, leading to them butting heads at times

Leading lady: The duo were joined by co-star Noomi Rapace, who joined the cast for the sequel as Gypsy fortune teller Madam Simza Heron

Say cheese! The stars were in high spirits as they joked around in front of the cameras

Chivalrous: Downey Jr assisted Noomi Rapace with her floor-length gown as the actors lined up for a photocall

Lovely ladies: Singer Duffy turned out to see the film, while Kelly Reilly, who plays Law's onscreen wife, dazzled in a blue gown

Detective work: Stephen Fry also appears in the film, while Jared Harris (right, pictured with partner Allegra Riggio, plays Holmes' nemesis Professor Moriarty

Class photo: The actors lined up to pose with their director

Boys will be boys: Law and Downey Jr appeared distracted as their beautiful co-star stood in front of them as they prepared for photos