Caitlyn Jenner Prepares to Square Off with Kylie Jenner Over Dueling Skincare Lines

Kylie Jenner has already staked her claim as the top dawg in the Kardashian family when it comes to cosmetics, but now she may be pitted against her own father as they both vie for dominance in the world of skincare.

According to documents obtained by The Blast, Caitlyn Jenner just registered a bunch of trademarks having to do with a new skincare line. "Skincare by Caitlyn Jenner," "Jenner Skincare," "Skincare by Jenner," and "Caitlyn Jenner Skincare" all claim to be product lines for "non-medicated skin care preparations." The filings list skin moisturizers, skin lotions, skin masks, facial balms, skin peels and even cosmetics.

Late last month, Kylie made a move to register her own line, "Kylie Skin," which claims to provide many of the same services that Daddy is now moving in on.

The tension between Caitlyn and the rest of the Kardashian clan, including Kendall and Kylie Jenner, has been building over the past few years. She hasn't been a regular part of their lives, and this new possible business war could complicate things further.

Caitlyn is obviously allowed to trademark whatever she likes, but Kylie, and especially Kris, may take umbrage with her trying to use "Jenner Skincare," which could easily be confused as a product Kylie endorses.

The last time we saw the two together was back in August at Kylie's 21st birthday party, but there's a good chance Caitlyn didn't bring up the fact that she was about to jump into the beauty world.

Thanksgiving should be interesting.