Ecclestone Sisters — Mine Is Bigger Than Yours!!!

Exclusive 0327_tamara_eclestone_disney_house_launchIt”s the female version of a genital challenge … two wildly rich sisters who are vying for the title of L.A. land baroness … and in this contest Tamara Ecclestone is giving little sis Petra a run for her money.

Real estate sources tell our sources … Tamara is on the hunt for a mansion more expensive than the one Petra bought from Candy Spelling which came with an $85 million price tag.

We”ve learned the not-to-be-outdone Tamara went shopping Monday with uber-realtor Mauricio Umansky (Kyle Richards” hubby) and spent an hour at the legendary Walt Disney mansion in Holmby Hills Monday — up the street from where Michael Jackson died.

Price tag — $95 MILLION for the mouse house.

We”re told Tamara really liked the 35,000 square foot mansion with insane grounds, 8 bedrooms and 17 bathrooms. 

The two very competitive sisters have money to burn.  Their papa is Formula One mogul Bernie Ecclestone, who”s worth just shy of $4 billion.

We couldn”t reach Tamara or Mauricio for comment … or Walt Disney.