Rosé is wearing:

Back Number Velvet Dress from Lucky Chouette

oversized bomber jacket from Juun.J

bee-seokkwan on Tumblr requested Jang Na Ra's outfits in One More Happy Ending so I've been hunting round and since it was a pretty popular drama, Korean shopping websites were helpful in my hunt for clothes~ I think the drama was adorable and Jang Na Ra really suited her role ^_^