She might have her own Primark collection but Coleen Rooney opted for a designer outfit costing £2,250 as she ran errands in Wilmslow, Cheshire on Sunday. The WAG, 40, cut a casual figure in a £1,400 Miu Miu pink polo shirt which she teamed with a pair of blue denim jeans. Styling her dark tresses in a low bun, the I'm A Celebrity star kept comfortable in a pair of Alaia £850 mesh ballet pumps. Coleen was spotted checking her phone as she walked down the street before taking a phone call on the way back to her car. The star opted for minimal accessories for the outing as she carried the few items she needed in her hand. It comes as Coleen is preparing to drop her second collection with Primark on July 28 after signing a multi-million pound deal earlier this year. She might have her own Primark collection but Coleen Rooney opted for a designer outfit costing £2,250 as she ran errands in Wilmslow, Cheshire on Sunday The WAG, 40, cut a casual figure in a £1,400 Miu Miu pint polo shirt which she teamed with a pair of blue denim jeansThe WAG's son Cass made his modelling debut at the age of eight as he joined his glamorous mother in her new Primark campaign. The TV personality shared her delight, calling the photoshoot with her youngest child a 'special moment'.Coleen and her football pundit husband, Wayne, 40, are parents to three other children, sons Kai, 16; Klay, 12, and Kit, 10.It marks her second By Coleen collection since signing a multi-million pound deal with the high-street retailer earlier this year.Coleen looked incredible in a checked jacket, before slipping into a black leather-look bomber jacket in a second shot.Cass sported a pale green jumper and off-white jogging bottoms as he posed in his first ever professional photoshoot.Coleen said proudly: 'As a mum to four children, I wanted the collection to feel stylish yet practical, and working with a brand like Primark that so many of my followers shop with was really important to me.'My friends all loved the first By Coleen collection, so I can't wait for them to see the next one.'My family are very proud of me with this collaboration, and having Cass as part of the kids wear photoshoot was such a special moment. Styling her dark tresses in a low bun, the I'm A Celebrity star kept comfortable in a pair of Alaia £850 mesh ballet pumps Coleen was spotted checking her phone as she walked down the street before taking a phone call on the way back to her car It comes as Coleen is preparing to drop her second collection with Primark on July 28 after signing a multi-million pound deal earlier this year'I'm over the moon for how it's all turned out and I absolutely loved seeing everyone tagging me in their posts with the last collection, so am hoping it's much the same this time round!'By Coleen will be available in Primark stores from July 28, with womenswear priced at £2.50 to £30; the kidswear launches in August, with prices starting at £7.In Great Britain, customers will also be able to shop the full collection via Click & Collect.Now that the photoshoot is done and the school holidays are in full swing, Cass has wasted no time in getting a new haircut for the summer.Shaving his whole head, aside from a small semi-circle at the front, Cass looks to have taken direct inspiration from the Brazilian player Ronaldo.The legendary footballer, who is widely regarded as one of the greatest players of all time, is famous for the iconic haircut he had during the 2002 World Cup.Posing in his Brazil football shirt, Coleen penned: 'Summer holidays... Hair style fun!!!'She later took to her Instagram Story to share the news that Cass and his team had also won their summer league as he posed holding the silver trophy.