In an interview with Collider.com, Savage Steve Holland (Better Off Dead...) said that he is directing the next two Legally Blonde sequels:

I heard that you were directing a sequel to the Legally Blonde franchise. Is that true? And what's the story about? And when do you start filming? RELATED: Reese Witherspoon Pays Tribute to Legally Blonde, Which Premiered 20 Years Ago Today