Lady Amelia Spencer is reunited with her sister Eliza in Barcelona

Amelia Spencer is back from her honeymoon in paradise – but she hasn’t touched down at home quite yet.

The model, 30, was reunited with her twin sister Eliza last night as the pair donned all their finery to attend a fashion show in Barcelona.

As Princess Diana’s nieces oozed glamour while posing for photos on the red carpet, Amelia still had her honeymoon glow as she donned a burgundy gown at the Pronovias event.

The cut-out asymmetric frock, which was glittery and clinched at the waist, was paired with black pumps.

The newlywed wore her blonde locks in a low, sleek bun as she posed for photos, and sported dazzling diamond and ruby earrings.

Meanwhile Eliza was dripping in elegance next to her sister as she opted for a sequinned black frock with a plunging neckline and a slit up the side.

Amelia’s twin opted to wear her hair down and parted in the middle as it hung down her back. She also accessorised with dangling diamond earrings.

The sisters attended the Pronovias show at Bridal Fashion Week in Barcelona, Spain. 

And newlywed Amelia knows a thing or two about bridal gowns after donning a lace dress from Atelier Versace to wed Greg Mallett, 30, in South Africa last month at a lavish ceremony.

In recent weeks, Amelia has been sharing photos of her heavenly-looking honeymoon in the Maldives with her new husband as they relaxed in crystal clear blue waters.

Lady Amelia Spencer (left) posed with Amandin Chayon (centre) and Eliza Spencer (right) at the Barcelona event

In the snaps, Lady Amelia could be seen relaxing in a pool while wearing a pink bikini, while in others, she donned a white bathing suit as she hopped onto a jet ski on the turquoise sea.

In another photograph, her new personal trainer husband Greg can be seen showing off his incredible physique on the beach.

Other snaps show the excited Greg taking photographs of the resort, as well as another image which shows the personal trainer showcasing his wedding ring with a wide grin on his face.

In her first Instagram post since sharing her wedding photographs, the socialite took to her social media profile to offer a glimpse of her honeymoon to her 56,000 followers.

‘The first few days of our magical honeymoon @coco_resorts #cocomoments,’ she captioned the collection of picturesque images.

In one photograph the affectionate couple share a kiss while standing in the sea, and others showed the newlyweds enjoying breakfast in a pool.

In one snap, Amelia can be seen showing off her physique in an ivory ribbed one-piece while standing in a pool in front of a backdrop of waves. In another, the beauty poses as she enjoys the sun in the same infinity pool.

There are also plenty of couple pictures, with one sweet photo capturing a kiss the newlyweds shared on a night out.