Heidi Montag -- and all of her brand new refurbished parts -- managed not to melt while standing upright underneath the hot L.A. sun on Wednesday.
In case of an emergency, the 23-year-old may be used as a flotation device.
The hills are alive!
Heidi Montag in 3DDD
2/18/2010 6:04 AM PST BY TMZ STAFF
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