Michelle Williams' impression of Justin Timberlake gets thumbs up from fans

There are calls for actress Michelle Williams to win a Grammy for her voicing of Britney Spear's memoir, after her impression of Justin Timberlake went viral.

Michelle voiced Britney's account of Justin changing his accent during an encounter with R&B singer Ginuwine.

And now the star could be in the running for an audiobook nomination.

Britney's memoir caused headlines with revelations about her ex-partner.

In the viral clip, Michelle reads a segment about the stars' meeting in New York, in which Justin apparently said: "One day J [Justin] and I were in New York, going to parts of town I had never been to before. Walking our way was a guy with a huge blinged-out medallion. He was flanked by two giant security guards.

"J got all excited and said so loud 'oh yeah, fo' shiz fo' shiz, Genuwine, what's up homie?'"

Britney explains she thought Justin's pop boyband NSYNC, who were white hip-hop fans, "tried too hard to fit in" with black artists they hung out with.

"J wasn't event embarrassed," Britney added after her assistant mocked J's greeting.

Many on social media said they were left in stitches over her interpretation of what they called his "blaccent".

"I gagged when it was revealed who Justin Timberlake was throwing on a blaccent for," one person tweeted.

"I never had any real opinions on Michelle Williams before but I bet she's incredibly fun to hang out with," said another.

"Michelle William's Grammy for best spoken word album secured," a fan added.

Other celebrities mimicked by Michelle include Mariah Carey. In her book Britney describes trying to take a photo with the Heartbreaker singer who insisted on taking the snap on her "good side".