Both Laura and Emily were rumoured last month to be taking over as regular team captains on the ITV2 panel show.
Holly quit in May after “12 years of fantastic chaos”, with other team captain Mel B leaving shortly afterwards.
On Thursday, bosses at ITV and Talkback confirmed the Love Island host and I’m a Celebrity… runner-up will be joining the show.
What did Laura Whitmore say about joining Celebrity Juice?
In a statement, Laura said: “I’m so thrilled to be part of the Celeb Juice Family.
“I’ve been the biggest fan for years, I used to go and sit in the audience when I first moved to London and can’t believe I’m a team captain now!
“I can’t wait to see what Keith [Lemon] has got lined up for Emily and I this series.
“From past experiences, nothing would surprise me. I cannot wait to get stuck in and lead my team to victory each week.
“I love you Emily, but watch out! I’m so excited to start!”
I’m so thrilled to be part of the Celeb Juice Family.
Meanwhile, Emily added: “Every time I’ve been on Juice in the past I’ve had such a good time.
“Now I’m doing it with two of my best mates and I’m a ruddy team captain! Can’t believe it.
“I dread to think what we’re going to be faced with, but Whitmore should know that I won’t be backing down.
“She is going to have some tough competition. But more importantly a wonderfully hilarious time. Bring it on!”
Both Laura, 35, and Emily, 30, have been guests on Celebrity Juice in the past.
Host Keith, 45, has said he “can’t wait” to welcome them to their new roles.
He said: “Can’t wait to start new celeb juice with old friends. Exciting times ahead! The funnest job ever!”
Meanwhile, fans branded the pair an “excellent choice”.
One said: “Excellent choices!!!”
Another wrote: “Sounds amazing! Can’t wait!!!”
A third added: “Love it, great team!!!”
Keith, Emily, Laura and guests will partake in brand new weird and wonderful games alongside the usual mix of hilarious stunts and challenges.
When will Celebrity Juice return?
The show returns to screens this autumn.
Celebrity Juice will air on ITV2 and has been ordered for a series of eight 45-minute episodes, with two 60-minute specials to follow.
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