The Danish striker’s wife, who he wed last year, celebrated a very special moment with her 67,000 Instagram followers yesterday.
The blonde beauty was seen on an idyllic beach in the Seychelles in a throwback taken during her honeymoon with the 27-year-old.
She left little to the imagination just hours before her husband is set to take on France in the final group game of the World Cup 2018.
Wearing her blonde tresses down in a natural wave, Theresa was seen walking away from the camera in crystal clear waters.
The star’s pert bottom was impossible to miss as she ran a hand through her bright locks while her slender figure took centre-stage.
Theresa was dressed in a blue bikini, with her patterned briefs struggling to contain her peachy rear.
“Exactly one year ago on my honeymoon,” she captioned it, before quickly receiving more than 3,000 likes.
Just days earlier she had marked her first weeding anniversary with Nicolai, who plays for Feyenoord as well as the national team.
“Today is our first wedding day anniversary,” Theresa started. “I met you 4.5 years ago and fell completely in love with you already then.
“But by that time I had no idea how lucky I was going to be, that I was going to spend my life with someone as special as you.”
She continued: “You are the kindest, smartest, most loving and loyal person I know. And even though we are miles apart from each other today, you still surprise me and make me feel like the luckiest girl on the planet.
“But babe, I feel that EVERY day. Happy 1st anniversary hubby [heart]. Thanks for letting me be your wifey, I love you so much.”
The athlete was seen staring at his other half as she smiled while resting her back on his chest.
Sporting a dark hat, she looked effortlessly chic in a pale jumper while Nicolai wore black.
Meanwhile, today Theresa was on hand too support her husband and side alongside a number of the other wives and girlfriends.
Dressed in the red kit, they were all seen sat around a table waving their arms in the air.
“WE ARE READY!!!! DENMARK,” she stated, alongside emojis of the Danish flag.
She was joined by the likes of Martin Braithwaite’s rumoured girlfriend Anne-Laure Louis and Maria Duus.
Denmark previously drew 1-1 with Australia and and managed a 1-0 victory against Peru.
Today’s winner will top Group C, but Denmark will secure a place in the knockout round if they manage to leave with one point or if Australia fail to beat Peru.