Michael Fassbender and Alicia Vikander wear wedding rings during 'post-marriage' celebration in Ibiza after 'tying the knot in private ceremony'

Michael Fassbender and Alicia Vikander were seen wearing wedding rings in Ibiza on Sunday, following rumors the duo were to wed on the idyllic island.

While the couple of three years have yet to confirm if they have indeed tied the knot, there was no missing the tell-tale bands adorning their left ring fingers.

Surrounded by their nearest and dearest, both the 40-year-old Assassin's Creed actor and his 29-year-old Oscar-winning fiancee appeared to glow with happiness as they dined at a restaurant on the beach for what looked to be a post-wedding brunch.

Neither star could wipe the smiles off their faces as they chatted with friends and intermittently checked in on one another.  

At one stage, Michael was seen cradling the gorgeous Jason Bourne actress' face as they shared a passionate kiss.

Dressed in a loose blue and white print dress with frill detailing, Alicia appeared content as she mingled with friends, who had reportedly gathered on the Mediterranean island for the nuptials.

Her brown hair was worn in two braids and tied back in a messy low bun, and she appeared fresh-faced.

The Swedish-born actress also donned a pair of white woven slip-on shoes and oversize black sunglasses.

Meanwhile, her handsome beau went for a relaxed vibe in a Hawaiian print shirt, which he wore unbuttoned over a white tank top.

He also wore blue short and what appeared to be a tribal pendant necklace.

Opting to go barefoot, the Irish actor also donned a pair of brown aviator sunglasses.

At one stage, he wrapped an affectionate arm around Alicia's shoulders, while holding a glass of wine in his other hand.

Clearly celebrating, the Hollywood heartthrob was also spotted clutching a cigar.