Post-Op Heidi Montag -- on All Fours

1/25/2010 12:34 PM PST BY TMZ STAFF
Caulked, spackled and freshly reupholstered "Hills" star Heidi Montag showed off her brand new swollen and bendable parts while practicing yoga poses in some sort of grassy field in L.A. this weekend.

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The 23-year-old is a pro at downward facing dog.