article: Victoria's Secret Angel Alessandra Ambrosio is recovering at a hospital in Los Angeles following a 'medical procedure' for 'constant headaches', Daily Mail Online can reveal. The Brazilian supermodel – seen partying at the Coachella festival in California on Sunday - underwent the procedure on Tuesday. She is currently being monitored at UCLA Hospital in Westwood, Los Angeles. SCROLL DOWN FOR VIDEO . Emergency: Alessandra  Ambrosio was treated at the Ronald Reagan center of UCLA hospital in Los Angeles. She had seemed in perfect health at the Coachella festival in California on Sunday but was suffering 'constant headaches' Expertise: The Ronald Reagan UCLA Medical Center is renowned for its high-quality care . Family: Alessandra Ambrosio was with her fiance Jamie Mazur, at Coachella, when they were photographed together on Sunday night attending an afterparty . Party spirit: Alessandra Ambrosio had enjoyed the atmosphere at Coachella festival and shown no symptoms of being unwell but had booked the appointment two weeks ago, a friend told Daily Mail Online . Ambrosio is undergoing treatment at the Ronald Reagan Medical Center. A friend said she had been suffering what she described as 'constant headaches' and had made the appointment two weeks ago. '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 friend said. A spokesperson for the supermodel confirmed to Daily Mail Online that Ambrosio, 34, was currently in hospital. The spokesperson said: 'Alessandro Ambrosio went to a doctor today for a scheduled medical visit and is currently in good health.' The spokesperson said he could not comment further on Ambrosio's condition. Ambrosio's medical drama came after she was seen partying at the Coachella Valley Music and Arts Festival in California at the weekend. The super slim Brazilian beauty spent hours at the gala with other supermodels, including Kendall Jenner. She kept her fans updated by posting dozens of photos of her and her friends at Empire Polo Club in Indio, California. On Instagram she wrote of the festival: 'What a wonderful world.' Among the acts performing on Sunday were Vance Joy, Marina and the Diamonds, Jenny Lewis, and St. Vincent. Ambrosio has two children - son Noah, three, and daughter Anja, seven - with her fiance, California businessman Jamie Mazur. Company: Alessandra was joined by her a group of friends as they walked around the festival . Happy times: Alessandra and her pals took the time to put together this selfie as they enjoyed the festival . Good times: Alessandra Ambrosio had been with friends as she enjoyed the atmosphere at Coachella . Happy: This was the message Alessandra Ambrosio posted on Instagram . Festival goer Kylie Jenner, 17, was one of the celebrities also partying at Coachella . Party scene: Alessandra Ambrosio was photographed with friends at Coachella.
highlights: Brazilian Victoria's Secret Angel underwent medical procedure and is still recovering in hospital .
  She had been suffering 'constant headaches' and had booked appointment two weeks ago, Daily Mail Online told by a friend .
  Mother-of-two had appeared well as she spent time at Coachella festival with celebrity friends including Kylie Jenner and Gigi Hadid .
  Procedure at UCLA's Ronald Reagan Medical Center was successful and aides said she is 'fine'
  Ambrosio, 34, had posted on Instagram yesterday about how much she was enjoying Coachella saying: 'What a wonderful world.'
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