Whoa, these bygone era triplets are seriously flexible.
"The Ross Sisters were a trio of female sibling dancers consisting of Aggie Ross, Elmira Ross, and Maggie Ross (whose real names were Vicki, Dixie and Betsy Ross). Their public attention peaked during the 1940s, during which they were featured prominently in the 1944 film Broadway Rhythm. The sole remaining known film clip shows them performing "Solid Potato Salad", which features the sisters' amazing contortionism."
The last time I saw anything close to this level of flexibility was at L.A.'s 2009 Yoga Olympics. It's a bit more fun seeing it in a musical dance sequence, though.
If you're interested in learning to bend your body every which way (or you're interested in your girlfriend being interested)... try introducing yoga, gymnastics, or acrobatics to your fitness routine.
Check out the Ross Sisters (Hint- skip ahead past the first minute mark to get to the good stuff):
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