Celebrity Parents Twins Mila and Emma Stauffer, 4, Were 'So Excited' to Design Their Own Line Sold at Target While Katie Stauffer has never really dressed her two youngest children alike despite them being twins, she admits "They really are similar in style" By Jen Juneau Jen Juneau Twitter Jen Juneau is a digital news writer for PEOPLE since 2016. People Editorial Guidelines and Deirdre Durkan Published on February 5, 2019 08:00 AM Share Tweet Pin Email Mila and Emma Stauffer are only 4 years old, but they've already added "fashion designer" to their list of achievements. The twin sisters' mom Katie Stauffer — a family blogger whose Instagram account boasts 4 million followers — spoke to PEOPLE exclusively about the girls' new line at Target, revealing "they were actually a big part," of the design process, "especially Mila" while "Emma isn't as picky on what she wears." "We'd have fabrics in mind and they said, 'Definitely this one,' " says Stauffer. "They were part of the fittings and everything. Mila would say, 'I think this should be lower,' and stuff like that." Amanda Pratt "They were a big part from the beginning to the end," she adds. "When we did get the dresses for them to call on, they were so excited." Want all the latest pregnancy and birth announcements, plus celebrity mom blogs? Click here to get those and more in the PEOPLE Parents newsletter. Mila and Emma Stauffer. Katie Stauffer/Instagram Mila and Emma Stauffer. Katie Stauffer/Instagram Sweet for Summer! Target Unveils New Kids' Collection Inspired By the Museum of Ice Cream The mother of five describes the pieces in the collection as "very girly" and "basically high-end fashion at an affordable price." "Not a lot of bigger stores have that affordable high-end look. This particular line is for spring, so a lot of soft colors and floral," Stauffer reveals to PEOPLE. "A lot of dresses. Also separates that match. But it is really feminine, really girly, springy and Easter!" The girls — who turned 4 on Halloween and have become an internet sensation in part due to their hilariously adorable rant-style videos — "had the time of their lives" modeling for the collection. "They totally understand what this is all about, which I didn't know if they would," Stauffer says. "They get there is going to be a clothing line at Target. I have never seen them more excited than at this photo shoot." RELATED VIDEO: Stranger Buys Mom of Four a Pumpkin Spice Candle at Target for the Sweetest Reason: "I Was Tearing Up" While Stauffer has never really dressed her two youngest children alike despite them being twins, she admits "They really are similar in style." "Mila is a bit more fussy, but Emma cares too," she tells PEOPLE. "They really like the same things." The Mila & Emma childrenswear line will be available Feb. 24 in stores and on target.com.