Sienna Miller flaunts her physique in a yellow bikini as she joins Cara Delevingne in Ibiza 

They recently rang in the model’s 30th birthday in style on Friday as they and a plethora of A-list pals partied during a lavish yacht trip Formentera, Spain. 

And the holiday continued for Sienna Miller and Cara Delevingne on Monday as they enjoyed a day soaking up the sunshine during an outing in Ibiza.

Sienna, 40, showed off her incredible figure in a skimpy yellow bikini while enjoying a dip in the refreshing waters nearby a swanky eatery.

Looking good ladies: The holiday continued for Sienna Miller and Cara Delevingne on Monday as they enjoyed a day soaking up the sunshine during an outing in Ibiza

While Cara slipped into a black swimsuit as she joined her pal and others including Lady Mary Charteris, with the group thoroughly enjoying a swim in the Mediterranean Sea.

Sienna’s two-piece featured a key-hole detail at the side, with the swimwear allowing her to perfectly display her tanned and toned midriff and legs.

The Layer Cake actress accessorised her beachwear with an elaborate pair of gold earrings teamed with a delicate gold necklace. 

Meanwhile, birthday girl Cara kept her look simple in a plunging black one-piece which featured gold chain detailing on the straps. 

Last month, Cara revealed the importance of representation in her industry after she starred on the cover of British Vogue. 

Flawless: Sienna showed off her incredible figure in a skimpy yellow bikini while enjoying a dip in the refreshing waters nearby a swanky eatery

Speaking to the publication about the importance of representation for her in the industry, she explained: ‘People need to see people like them.’ 

‘It’s also important that in our industry, the entertainment industry, we are meant to be at the forefront of what is going on in the world, what people are and what we should be doing, which is leading.’

‘And to be leading, we need to represent all types of different people. Growing up, I didn’t really see many people like me. So I’m just really grateful to be able to be one of those people representing.’

Fun in the sun: Sienna was living her best life as she joined her pals for a fun outing on the Balearic island

Gorgeous: Sienna’s two-piece featured a key-hole detail at the side, with the swimwear allowing her to perfectly display her tanned and toned midriff and legs

Asked about her ‘coming out story’ she continued: ‘It’s hard to call it a coming out story, because I never really came out.’ 

‘It was more that I just decided to put my cards on the table and say look, I’m in love, I’m in love with who I’m in love with. It didn’t feel like I was making, you know, a conscious decision to be out.’

‘It just meant that I was done with being in the closet. I was done with being ashamed for who I loved and who I was. So for me it was more just being like, love is love, and we should be able to love who we want.’

Making a splash: Meanwhile, birthday girl Cara kept her look simple in a plunging black one-piece which featured gold chain detailing on the straps