Alessandra Ambrosio is recovering in hospital following a "medical procedure".
The Victoria's Secret Angel - who has son Noah, three, and daughter Anja, seven with fiance Jamie Mazur - underwent treatment yesterday (14.04.15) after suffering "constant headaches" and is currently being monitored at UCLA Hospital in Westwood, Los Angeles.
A friend said: "I have spoken to her team, her manager and everyone that went with her for her medical procedure and they say she is fine."
The pal went on to explain that the 34-year-old beauty - who spent the weekend partying at the Coachella festival with friends - had booked the appointment two weeks ago.
A spokesperson for Alessandra confirmed she is currently in hospital and in "good health", but wouldn't comment further on her condition.
They told MailOnline: "Alessandra Ambrosio went to a doctor today for a scheduled medical visit and is currently in good health."
The Brazilian beauty shared a number of photographs on Instagram this weekend as she enjoyed Coachella with friends including fellow model Kendall Jenner.
Alongside one photo at the Empire Polo Club in Indio, California, she wrote: "What a wonderful world. #Coachella #friends #music #goodvibes #foreveronvacation (sic)"