By  James Leyfield  
      Published:    04:31 EST, 23 June 2014     |     Updated:    05:35 EST, 23 June 2014    
      She was recently seen holidaying in a swimsuit just a few weeks after it was revealed she is pregnant. 
But Hayden Panettiere has now shown off her bare baby bump for the first time as she stepped out with her fiancé Wladimir Klitschko on Sunday. 
The Nashville star and the professional boxer were seen enjoying the sunny delights of Porto Cervo in Sardinia.
      
On holiday: Hayden Panettiere showed off her bare baby bump for the first time as she stepped out with her fiancé Wladimir Klitschko on Sunday
      
Fun in the sun: The Nashville star and the professional boxer were seen enjoying the sunny delights of Porto Cervo in Sardinia
      Hayden opted for a loose-fitting black top to showcase her bump and teamed her look with a pair of loose-fitting trousers.
     He also dressed down for the occasion in a purple T-shirt and a pair of checked shorts as well as a pair of sandals. 
Earlier in the day, Hayden was seen sporting a longer black top which didn't showcase her bump quite so well.
        Blonde beauty: The star looked to be in good spirits as she soaked up the Italian sun
      
Expecting: Hayden opted for a loose-fitting black top to showcase her bump and teamed her look with a pair of loose-fitting trousers
      
Soaking up the sun: He also dressed down for the occasion in a purple T-shirt and a pair of checked shorts as well as a pair of sandals
      
Messing around: The star spent part of the stroll pulling jokey faces behind Wladimir's back
      
Happily chatting: The couple looked to be thoroughly engrossed in conversation at one point as she used her arms to make her point
               The star accompanied them with a pair of patterned trousers and flip flops. 
Both stars opted for matching sunglasses to accessorise their look as they went on a stroll in Italy. 
This comes after it was reported late in May that the 24-year-old actress and Wladimir were expecting their first child together. 
      
Happy days: Both stars opted for matching sunglasses to accessorise their look as they went on a stroll in Italy
      
Laugh out loud: At one stage Wladimir chuckled as Hayden made an unusual movement with her shoulders
      
Having fun: Hayden looked to be having a great time making the strange motion
      
Got you: But Wladimir couldn't resist looking back at Hayden to see what she was up to
                  
Don't fancy a dip? The Heroes star - who got engaged to the 36-year-old athlete last year after a three-year on/off romance - previously admitted she was keen to start a family and felt like she was 'born' to be a mother
      
Earlier in the day: Hayden was previously seen sporting a longer black top which didn't showcase her bump quite so well
      
Exciting times ahead: Hayden previously told Glamour magazine: 'I've lived a very big life, and I don't feel my age, and I feel like I was born to be a mother.'
         A source told the new issue of Us Weekly magazine: 'Hayden is totally pregnant!'
The Heroes star - who got engaged to the 36-year-old athlete last year after a three-year on/off romance - previously admitted she was keen to start a family and felt like she was 'born' to be a mother.
She previously told Glamour magazine: 'I've lived a very big life, and I don't feel my age, and I feel like I was born to be a mother. 
        Happy couple: Hayden was also seen wearing her huge engagement ring on her finger
         
Out and about: Hayden and Wladimir looked to have had a successful shopping trip
      
Shopping done: The stars headed off into the sunset after completing their shopping trip
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