'Lucky you're cute': Kris Smith's girlfriend Sarah Boulazeris reveals struggle with 'sleep deprivation' on a family day out with four-month-old daughter Mila By Caleb Taylor For Daily Mail Australia Published: 10:37 BST, 18 April 2019 | Updated: 10:37 BST, 18 April 2019 Viewcomments Myer ambassador Kris Smith's girlfriend Sarah Boulazeris gave birth to the couple's first child together, Mila, in December. And on Thursday, the Bondi personal trainer proved they're just like other new parents by lamenting her lack of sleep. Taking to Instagram, the 28-year-old shared a snap of her cherubic daughter on a family out in Sydney. 'Lucky you're cute': Kris Smith's girlfriend Sarah Boulazeris reveals struggle with 'sleep deprivation' on a family day out with four-month-old daughter Mila Sarah shared a short clip of her cherubic daughter smiling in her pram. 'How's your sleep deprivation, mum? Lucky you're cute!' she wrote. Sarah was pictured walking with her model boyfriend Kris, who also joked about sleepless nights. Too cute: Sarah posted this adorable photo of her daughter, Mila 'One more word and the unicorn [toy] gets it,' he joked to Mila It was a candid moment for the couple, who have regularly spoken about their journey as new parents on social media. The young family enjoyed a luxurious vacation to Byron Bay last month, staying at the upscale Elements of Byron Bay & Spa. 'I look like I'm the one who has had the baby': The young family enjoyed a luxurious vacation to Byron Bay last month, staying at the upscale Elements of Byron Bay & Spa Sarah, who maintained light exercise during her pregnancy, flaunted her stunning curves in a skimpy striped bikini during the idyllic vacation. Taking to Instagram, Sarah looked happy and relaxed as she enjoyed her downtime in the tourist hub, sipping on an iced coffee on a sun lounge. The eye-catching display caught the attention of boyfriend Kris, who was in awe of his girlfriend's stunning physique just months after Mila's birth. Sarah showcased her incredible post-baby figure (R) while breastfeeding daughter Mila Elle in December. Pictured (L) In November and (R) In December, one week after giving birth Share or comment on this article: All rights reserved for this news site dailymail and under his responsibility