Instagram on Location: The Cast of 'Pretty Little Liars'

This week's Pretty Little Liars" stars Ashley Benson, Lucy Hale, Shay Mitchell, and Troian Bellisario behind the curtain.

Shay Mitchell and Ashley Benson

"You ready?! #ButtahBenzo is back ???????????? #PrettyLittleLiars season finale is on TONIGHT!!!" - Shay Mitchell

Lucy Hale

"Guess what tomorrow is ? PLL spring finale. Be there. Or be there." - Lucy Hale

Ashley Benson on Set

"Yup ????" - Ashley Benson

Ashley Benson (Photo Cred: Troian Bellisario)

"@itsashbenzo watched the episode during lunch and said it gave her the chills. Are you watching tonight? Tweet me @sleepinthegardn and let me know." - Troian Bellisario

Ashley Benson Get Fitted For 'PLL'

"This is how I feel when I fit with @mandiline for PLL" - Ashley Benson

Shay Mitchell Takes a Break From Shooting

"The awesome @shaym in between set ups on our season 5 finale. Excited for you to see the crazier episode we've filmed yet." - Troian Bellisario

Shay Mitchell Dolls Up

"Glam time ... ! #allhandsondeck ????????????" - Shay Mitchell

Troian Bellisario Get Ready For Season 6!

"Wow. Haven't gotten up this early in a while. Here we go season 6! Just in time to get you guys a premiere for tonight's finale!" - Troian Bellisario