Los Angeles, June 17 -- As the popular series 'Pretty Little Liars' turned 15 recently, Lucy Hale, who played Aria Montgomery took a trip down memory lane.

The actress, on Monday, took to her Instagram account to share behind-the-scenes moments from the hit series that aired from 2010 to 2017.

In the heartfelt post, the 36-year-old gave fans a peek into life on set with a series of throwback photos and videos. Calling the milestone "15 years of PLL--the nostalgia!!", Hale reflected on how much the show meant to her and how it shaped her life.

"Some of these photos are so low quality, but it really was a different time, lol. The last slide is a video I stumbled upon and didn't even realize I had. Just a small, but not uncommon moment wh...