WATCH: Is Dianna Rolling Her Eyes At Taylor?

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Modern Family star Sarah Hyland just thought she was posting a silly Vine video of her singing with friends Taylor Swift, Dianna Agron and boyfriend Matt Prokop at a fun. show in Los Angeles on Tuesday night, Sept. 3. Little did she know that many would claim Agron was throwing shade at Swift.
The video (WATCH) shows Swift, Hyland, 22, and Prokop, 23, singing backstage to the band's song Out On the Town, while the 27-year-old Glee gal stands by and watches, not participating in the sing-along. Swift, 23, also re-tweeted the Vine video from the show and included Agron in on the tweet, writing:
What do you think? Is Agron rolling her eyes in this video?