Michael Strahan's daughter Isabella, 19, breaks down in TEARS as her dad surprises her with a visit from her 'favorite person' Bryson Tiller as she continues treatment for brain cancer

Michael Strahan had a special surprise his 19-year-old daughter Isabella amid her battle with medulloblastoma - a rare form of brain cancer - in the form of a visit from her 'favorite person'. 

Isabella has been documenting cancer journey In the vlog, tearfully revealing she was recently surprised by her 'favorite person ever,' singer Bryson Tiller - as well as rapper Fat Joe. 

The heartwarming moment was captured and uploaded to Isabella's YouTube page, beginning with Michael hiding in a foyer with Bryson, Fat Joe, and several others as they wait for Isabella to get ready. 

'If she'd have been in her pajamas when you walked in here... we would have a problem. She wouldn't forgive us,' Michael, 52,  jokingly explains as the group wait to go meet Isabella.

Michael Strahan had a special surprise his 19-year-old daughter Isabella, amid her battle with medulloblastoma - a rare form of brain cancer 

Isabella revealed she was recently surprised by her 'favorite person ever,' singer Bryson Tiller (pictured)

The group then sneaks downstairs, holding bags and flowers, and Bryson enters the kitchen coming face-to-face with Isabella. 

The University of Southern California (USC) freshman was instantly star struck, left speechless as her favorite singer goes to hug her. 

'Oh my God! It's Bryson Tiller! You're my favorite person ever,' she exclaims as they hug, and she is overwhelmed by tears. 

'I'm sorry, I usually don't cry like this. It's so nice to meet you,' she gushed, tearfully adding she's 'great' when the singer asks her how she is.

The teen, who just last week revealed she recently had last-minute brain surgery and spent four days in the ER due to soaring fevers, jumped up and down with excitement.

'You haven't moved this much in months!' her Good Morning America host father observed in amusement.

Michael explains that Fat Joe had seen Isabella's YouTube videos, and in one filmed on her last day of radiation, she had mentioned that Bryson Tiller was playing - exclaiming he was her 'favorite' - so he helped arrange for him to visit her.

'Bryson was  gracious enough to fly in just for you for this,' Michael told an emotional Isabella. 

The University of Southern California (USC) freshman was instantly star struck, left speechless  at the sight of her favorite singer 

The pair went to build a flowerpot Lego set that Bryson bought for her, while they chatted about his music process

Isabella emotionally admitted that she listened to Bryson's music during every session of radiation after being diagnosed with the rare form of brain cancer

Michael told his daughter Fat Joe had seen Isabella's YouTube videos, and in one filmed on her last day of radiation, she had mentioned that Bryson Tiller was playing

Isabella admitted that she listened to Bryson's music while she was undergoing radiation treatment after being diagnosed with brain cancer.

'I don't usually fangirl,' the overwhelmed teen said, with her dad cutting in and lovingly telling her: 'You're fangirling.'

'All your cool is out the window,' he joked. 

The pair went to build a flowerpot Lego set that Bryson bought for her, while they chatted about his music process.

As Bryson's visit came to an end, Isabella excitedly told him she had the 'best Wednesday ever.'

'Thank you for coming to see me. This made my whole life,' she says at the end, giving him a hug goodbye. 'It was so nice to meet you. I'm the biggest fan ever.'

Isabella explained on GMA in January that she started suffering from 'excruciating headaches' during her freshman year in college, first noticing something had been 'off since probably September.'

'Like October 1, that's when I definitely noticed headaches, nausea, [I] couldn't walk straight,' she shared in a heartbreaking interview with her father.

Isabella has been candid about the pain she has suffered after being diagnosed with the rare form of brain cancer last year 

In a recent video, Isabella revealed how difficult it was for her walk as the treatment has begun to take a toll on her

Last month, the host's daughter, 19, broke down in tears as she discussed her medulloblastoma - a rare form of brain cancer - diagnosis during an episode of Good Morning America

Initially, Isabella said she mistook her symptoms for vertigo. Michael confessed that when his daughter shared her symptoms with him, he never considered that they might be indications that she was battling cancer, particularly because she was just 18 and was so 'young, strong and healthy.' 

Isabella was ultimately diagnosed with medulloblastoma, which - according to GMA - accounts for 20 per cent of all childhood brain tumors and is typically found in about 500 children each year, most commonly those between the ages of five and nine. 

Isabella underwent emergency surgery to remove the tumor on October 27, one day before her 19th birthday, with Michael stating that doctors wanted to 'get it out as soon as possible.' 

The teenager faced an uphill battle in the wake of the surgery, during which she underwent a 'grueling month of rehab,' which included re-learning how to walk.

Isabella revealed her diagnosis to GMA in January, explaining  she started suffering from 'excruciating headaches' during her freshman year in college, first noticing something had been 'off since probably September'

Following the initial surgery, Isabella (seen with her dad and sister) underwent several rounds of proton radiation therapy, which she completed just one day before her GMA appearance

Following the surgery, Isabella underwent several rounds of proton radiation therapy, which she completed just one day before she revealed her diagnosis to the world.

Isabella has previously opened up about some of the terrible symptoms she has endured as a result of her chemotherapy, recently revealing she underwent emergency brain surgery and was suffering 102 degree fevers. 

'I don't feel great, I don't feel horrible, I felt worse but I don't feel good. I feel like I can barely walk now,' she admitted. 

Since first opening up about her diagnosis on the morning show, Isabella has been documenting her horrific journey on her YouTube account, where she has racked up more than 21,000 subscribers.

Her father added of her decision to be so open about it online, 'She's [doing it] in the hopes that other people with the same diagnosis will feel supported and know they are not alone.'