Kris Jenner: Legal Fight Looms Over Who's the Real Proud Mama

Kris Jenner is now in a legal fight over who's the proudest mom.

As we reported, Kris is trying to trademark #ProudMama. Problem is ... a jewelry company already owns the name "Proud Mama" and plans to spend what it takes to block the famous mother.

Jenny Present owns the jewelry company and trademarked the name back in 2009. She says adding a hashtag doesn't cut it, and she's not about to have her business jacked by Kris.

It's interesting ... Jenny says her line is geared toward some celebrity moms, including Kourtney Kardashian.

Jenny's lawyer says he will "vigorously" protect his client's rights and is even pulling at the heartstrings, saying Jenny is a single mom who lives for her 8-year-old son.

Kris wants to use the name for advertising purposes, which sounds like a business to us. So get ready for the mama of all fights.