Olivia Wilde performs 'breast milk' ice bucket challenge

Olivia Wilde has performed the ice bucket challenge with a twist.

The fiance of Jason Sudeikis poured a milky fluid over herself after being nominated by several Glee star Dianna Agron and child actor Ty Simpkins among others, the Independent reported.

Wilde joked that she is using a bucket of breast milk, which took her "all night to make", as she "couldn't find any water", but later confessed that it wasn't breast milk.

The 'Her' star, who is a supporter of breastfeeding, nominated Senator Cory Booker, writer Gloria Steinem and Prince to take the challenge.