Rosie Huntington-Whiteley was smoldering hot at the “Transformers: Dark of the Moon” press conference which was held at the St. Regis Hotel in Osaka, Japan on Saturday.

She opted to wear a black leather Marios Schwab Spring 2011 dress.

The short belted dress with a scoop neckline had a strap running down the middle of the back and a lace trim on the hemline.

She accessorized with Christian Louboutin pumps, gold hoop earrings and twin heart studs.

Rosie’s glossy golden mane was styled in loose waves which flicked up at the ends.

She took this look from rock chick to super sexy.

“Transformers: Dark of the Moon” opens in Japan on July 29.

[nggallery id=891]
Credit: Style.com & Getty