On March 30th, 4minute unveiled their album jacket photos from their new EP "Heart to Heart" through the Naver Music website. Judging by the two sets of photos, the girls seem to represent a 'day-and-night' concept. In the first set, 4minute used metallic dresses and shining mirror items to perfect a chic, trendy look. In the second set, the girls were snapped preparing for a night out in their luxurious black outfits. Fans have been drawn to the impressive individual shots of�HyunA, Jiyoon,�Sohyun,�Gayoon and Nam Ji Hyun. Many felt that to date, it's the most expressive set of pictures the girls have taken so far. Check out the shots below! [gallery] Source: Sports Today via Nate