Sienna Miller, 42, stuns in a plunging silk gown as she joins boyfriend Oli Green, 27, at billionaire friend David Winter’s Venice wedding – five months after welcoming their baby daughter

Sienna Miller looked sensational as she and boyfriend Oli Green attended billionaire David Winter’s wedding to Georgia Irwin in Venice on Saturday.

The actress, 42, who welcomed her first child, a daughter, with the male model in Januarywent braless for the occasion under a deep orange dress.

Sienna’s silk dress hugged her gorgeous curves and she completed the look with a chunky gold choker and matching bracelet.

She added extra height to her frame with a pair of strappy sandals and tucked her day essentials into a chic clutch.

Meanwhile, Oli, 27, cut a dapper figure in a dark tailored suit worn over a crisp white shirt and emerald green tie.

Sienna Miller, 42, looked nothing short of sensational as she and boyfriend Oli Green, 27, attended billionaire David Winter’s wedding in Venice on Saturday.

Sienna Miller 42 stuns in a plunging silk gown as

The actress, who welcomed her first child with the male model in January, went braless for the occasion under a deep orange dress

Sienna's silk dress hugged her gorgeous curves and she completed the look with a chunky gold choker and matching bracelet

Sienna’s silk dress hugged her gorgeous curves and she completed the look with a chunky gold choker and matching bracelet

Standard Industries CEO David’s wedding took place on the nearby island of La Certosa, with guests and their cocktails taken to the chic venue by water taxi.

La Certosa is an island in the Venice lagoon and is located 500 meters northeast of Venice.

After the star-studded ceremony, Sienna and Oli were spotted strolling hand-in-hand in the sunshine.

Other guests included Prince Harry’s ex Cressida Bonas, 35, who put on a very leggy show in a sparkling brown dress with a very racy slit.

Just five months after having a baby, Sienna stole the show on the red carpet at Cannes last week as she promoted her new film: Kevin Costner’s western epic, Horizon: An American Saga.

Her co-star summed her up by saying, “Her outward beauty is undeniable, but she is so skilled as an actress.”

Sienna embraces motherhood again in her early 40s and undergoes a renaissance with fans and commentators declaring that the British actress has “never looked better,” despite the demands of work and having a young family.

Brand and culture expert Nick Ede told MailOnline that he predicts Sienna is about to ‘steal the crown of becoming Britain’s biggest Hollywood star’.

She added extra height to her frame with a pair of strappy sandals and tucked her day essentials into a chic clutch

She added extra height to her frame with a pair of strappy sandals and tucked her day essentials into a chic clutch

Sienna wore her flowing skirt as she made her way to the ceremony

Sienna wore her flowing skirt as she made her way to the ceremony

She let her blonde locks fall into a soft wave and finished the look with a classic red lip

She let her blonde locks fall into a soft wave and finished the look with a classic red lip

She let her blonde locks fall into a soft wave and finished the look with a classic red lip

1716733239 369 Sienna Miller 42 stuns in a plunging silk gown as

Meanwhile, Oli cut a dapper figure in a dark tailored suit worn over a crisp white shirt and emerald green tie

The couple appeared in good spirits as they celebrated their friend's big day

The couple appeared in good spirits as they celebrated their friend’s big day

Standard Industries CEO David's wedding was held on the nearby island of La Certosa, with guests and their cocktails taken to the chic venue by water taxi

Standard Industries CEO David’s wedding was held on the nearby island of La Certosa, with guests and their cocktails taken to the chic venue by water taxi

Sienna was helped into the boat by another guest, who also kissed her on the hand

Sienna was helped into the boat by another guest, who also kissed her on the hand

Sienna and Oli were spotted strolling together in the sunshine after the ceremony

Sienna and Oli were spotted strolling together in the sunshine after the ceremony

La Certosa is an island in the Venice lagoon and is located 500 meters northeast of Venice

La Certosa is an island in the Venice lagoon and is located 500 meters northeast of Venice

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