The 40-year-old actress hosted Facebook live Q&A session and talked about her pink heroine Elle Woods.
"I loved making Legally Blonde, because I love pink! It was really fun! I got to wear all the amazing costumes. I also got to work with a dog every day... I'm obsessed with dogs.
"A lot of people have asked me if we're going to make another Legally Blonde and we're thinking about it," Witherspoon said.
The first part of "Legally Blonde" was released in 2001. The second installment titled "Legally Blonde 2: Red, White & Blonde" came out in 2003. The role has been Witherspoon's most popular ones.
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