Katie Price, 29, and husband Peter Andre, 35, flew into Los Angeles with their three children Princess; Harvey, five; and Junior, two; on Friday.
When the family arrived at LAX airport, Katie admitted Princess had caught the chicken pox virus from older brother Junior.
She said: “She’s covered in chicken pox. How typical.
“She’ll be alright. Junior’s just had them.”
During an outing on Saturday, Princess appeared to be uncomfortable from her illness, causing the couple to bring her to a clinic in Encino, before being redirected to the Children’s Hospital in nearby Hollywood.
They were seen by a specialist, who prescribed the tot with medication.
NHS Direct describes chicken pox as “highly infectious” and recommends sufferers stay at home “until all of the blisters have fully crusted over”.
The couple is now being called terrible parents for not keeping her home to get better.
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