October 21, 2013 - 11:09 BST hellomagazine.com Kourtney Kardashian, elder sister to Kim and Khloe Kardashian, talks about fashion regrets, maternity style and working with her famous sisters Kourtney, Kim and Khloe Kardashian launch their new Kardashian Kollection for Lipsy in the UK this week – and eldest sister Kourtney has given an exclusive interview to HELLO! SCROLL DOWN FOR FULL INTERVIEW The reality TV star spoke to HELLO! about fashion regrets – "I have so many" – working with her sisters, maternity style and the items of clothing that she feels most sentimental about.What’s your biggest fashion regret? There have been so many. But I don’t consider them regrets. Fashion is so subjective and I think it should be playful.Do you and your sisters tell each other if there’s an outfit you don’t think the other should be wearing? We're definitely honest with each other… if your sisters can't tell you that you look ridiculous, who can? VIEW GALLERY Photo:© Terry Richardson Do you have an item of clothing that you feel sentimental about? I have so many pieces that once belonged to my mom and both of my grandmothers. All of these pieces are very sentimental and I love to wear them. I also have many pieces from my father that I probably cherish the most. I love wearing his dress shirts.When designing the Kardashian Kollection with your sisters, do you find it difficult reach an agreement? The Kollection is a complete mix of Kim, Khloé and I – each of our individual styles are reflected and that has been the way we have always designed. We are constantly emailing each other with ideas – three minds are better than one sometimes. Working together as sisters is the most rewarding part of having a line together. There are times when we disagree, but we all respect each other’s opinions and ideas.Is there one sister who usually has the final say? No one has the final say. We have equal input on every piece and will always brainstorm until we've come up with something that we all love in the end. We do have a two against one rule. If two sisters feel very strongly about a design or trend we want to try, we go for it.How did your clothing choices differ when you were pregnant? I loved dressing for my pregnant body. A pregnant woman's body is so beautiful. Towards the end, it does get harder, and then it became all about flats and comfortable maxi dresses.How does the Kardashian Kollection for Lipsy stand apart from previous collections that you have done? We wanted to offer something different to what currently exists on the British high street. We spent a lot of time trend forecasting and collaborating on ways to design a fresh line of fashion-forward, affordable luxury. Kardashian Kollection for Lipsy will have some amazing stand out pieces like a full-lace jumper and metallic sequin jackets.What’s your favourite item of clothing from the collection? The lace monochrome dress with scalloped edging is one of my favourites. It’s very feminine and will be a great style for holiday parties.Do fans give you feedback on your designs? Our fans give us great feedback and we love to read all the comments on Instagram, Facebook and Twitter. I always love seeing people in our Kollection. Our fans are so fashionable and it’s so fun to see how they put their looks together.The Kardashian Kollection for Lipsy launches on Thrusday 24 October 2013 at Lipsy stores across the UK and online at Lipsy.co.uk. Princes range from £30 - £150.00.