Former Wonder Girls members HyunA and Sunmi reunited and posed for a photo together, showing their lasting friendship of more than seven years.

HyunA uploaded two pictures with her former group-mate onto her Instagram account with the caption, "Heart, heart." In the photos, the girls leaned into each other and looked deeply into the camera with matching beauty looks.

Wonder Girls fans are likely experiencing déjà vu! Although Sunmi and HyunA have found great success with K-pop solo careers, both girls began their musical journey as part of the JYP Entertainment girl group. HyunA withdrew from the Wonder Girls in 2007, after her parents voiced concerns over her health and fainting spells. Sunmi departed in early 2010 to pursue an academic career, after dropping out of high school to concentrate on American promotions with the group.

Since then, HyunA has gained artistic recognition as part of Cube Entertainment's girl group 4Minute. She is also part of sub-group Troublemaker with Beast's Hyunseung and launched a solo career. She has gained various titles and awards, and won SBS PopAsia Awards's Best Solo Artist award in 2014.

Sunmi returned to music in 2013 with "24 Hours." She recently won the Best Solo Dance Performance award at the 2014 Mnet Asian Music Awards.

Go back in time and watch HyunA and Sunmi work their hardest in Wonder Girls' music video for "Irony' below!

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