Sienna Miller and Kevin Costner are the show

Venice – The 81st Venice International Film Festival came to an end on Saturday evening. For Hollywood beauty Sienna Miller (42) Reason enough to show herself once again in a particularly flash-provoking dress! The “American Sniper” star appeared on the red carpet in nothing.

The fact that “The Room Next Door” by star director Pedro Almodóvar (74) was awarded the Golden Lion – the main prize of the festival – that evening may have become a minor matter for one or two fans at this performance!

Sienna Miller had put together an extra eye-catching outfit for the big final day in Venice. She appeared in a white lace jumpsuit at the premiere of Kevin Costner's (69) “Horizon: An American Saga – Chapter 2”. She plays or is supposed to play the female roles in all four parts of the western epic.

What was special about the 42-year-old's dress? It was practically completely see-through! You could clearly see her extra-long black boots and her white panties, even though her dress-like jumpsuit actually reached down to her ankles.

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And Miller didn't hold back on showing what was underneath her outfit either: the American's breasts were clearly visible through the thin white fabric. She had obviously left her bra in the hotel on Saturday…

She completed her amazing look with her famous long blonde mane that fell over her shoulders and along her bust to her hips, and a gold Chloe belt.

Co-star and director Costner walked next to her – true to James Bond style – on the red carpet in a grey suit by Brioni and with cool black sunglasses on his face.

Only this summer, the two were together in the first “Horizon” part in cinema The western, however, did not live up to expectations at the box office. The second “Chapter” is due to appear on the big screen in Germany in November. Is Miller's nude appearance part of the promotion?