• Maddie Ziegler and Troian Bellisario

Maddie Ziegler and Troian Bellisario (Photo : Instagram/sleepinthegardn)

"Pretty Little Liars" is already in its season 6 episode 7 titled "O Brother, Where Art Thou," which will air on July 12, Tuesday, but Troian Bellisario's character Spencer Hastings in the ABC Family series has yet to graduate from high school.

In real life, Bellisario will turn 30 on Oct. 28. This may be one of the reasons why there is a five-year time jump in "Pretty Little Liars" season 6, as rumors claim.

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Bellisario is one of the seven actors playing the main characters of "Pretty Little Liars" from season 1 to season 6. Her co-lead stars are Laura Leighton, 46, as Ashley Marin, Ian Harding, 28, as Ezra Fitz, Shay Mitchell, 28, as Emily Fields, Lucy Hale, 26, as Aria Montgomery, Ashley Benson, 25, as Hanna Marin and Sasha Pieterse, 19, as Allison DiLaurentis.

Aside from Bellisario, Bianca Lawson, 36, also played a "Pretty Little Liars" character who was several years younger than her. In the first three season of the ABC Family series, she played a high school sophomore named Maya St. Germain.

In "Pretty Little Liars" season 6 episode 7 titled "O Brother, Where Art Thou," Bellisario's character Spencer Hastings and Ashley Benson's character Hanna Marin will give the teen fiend some visitors, which will shock the latter.

Meanwhile, Bellisario is set to star in "Sister Cities," an indie drama based on the play by Colette Freedman, according to Variety. She will star with "Sleepy Hollow" star Michelle Trachtenberg, "The Good Wife" alum Jess Weixler and "Castle" actress Stana Katic.

Also, Bellisario is reportedly set to get married with her fiancé Patrick J. Adams but they are yet to set a wedding date as they both have hectic schedules recently, Bustle has learned.