Sam Winchester's (Jared Padalecki) hair has become something of a running gag on Supernatural, but has the cast really been paying that close of attention to Sam's luscious locks over the years? We decided to put them to the test!

TV Guide challenged the cast at PaleyFest to match Sam's hairstyle to the corresponding season. Considering the varying lengths of Padalecki's hair over the years, it should have been easy, right? Wrong.

Jensen Ackles, bless his heart, got a couple answers out of order, while his wife Danneel Ackles (who is also guest-starring on Supernatural this season) also mixed up some of the later seasons — an easy mistake to make! Jared Padalecki, unsurprisingly, managed to match all his different hairstyles to the right seasons, a fact he felt compelled to brag to Ackles about while celebrating his victory.

The surprise ringer of this game turned out to be Alexander Calvert, a relatively new cast member who plays Jack, the nephilim son of Lucifer (Mark Pellegrino). He managed to get a perfect score, although he admitted afterward that he based his guesses primarily on which hairstyle was in fashion during that year more than any actual knowledge of Padalecki's hair evolution.

Supernatural airs Thursdays at 8/7c on The CW.

(Full Disclosure: TV Guide is owned by CBS, The CW's parent company.)

Jared Padalecki, <em>Supernatural</em>Jared Padalecki, Supernatural