Michael Strahan’s daughter Isabella, 19, dons bikini for a sunny pool day with her twin sister Sophia… after grueling brain cancer battle

Michael Strahan’s daughter Isabella enjoyed a sunny pool day with her twin brother Sophia after her battle with brain cancer.

Isabella, 19, who recently shared that she had her latest radiation treatment, looked in good spirits as she posed with her sister in a cute black and red cherry print bikini and a straw hat.

Sophia, who wore a purple bikini, shared the photos on her Instagram page and wrote “us again” in the caption.

She also shared a clip of the two cooling off in the pool, with Isabella revealing her shaved head, after recently admitting she struggled to look at herself in the mirror when her hair ‘fell out’ during radiation .

The University of Southern California freshman was diagnosed with medulloblastoma in October after she began suffering from “excruciating headaches” and waking up every morning vomiting.

The girls seemed to be having a great time together, with Sophia flashing a peace sign at the camera in the snap.

“I love you,” Isabella commented on her sister’s post, before emphatically adding, “Livin.”

“I love you too,” her twin brother wrote back.

Many responses expressed the joy of seeing the sisters together.

“So happy to see you together and prayers up ladies!”

“Happy to see you both smiling,” another added.

Last week, Isabella shared footage of the heartfelt moment she underwent her final radiation treatment and broke down in tears – as her mom and dad put their feud aside and reunited to celebrate her brain cancer milestone.

After six weeks of treatment, Isabella was able to ‘ring the bell’ – a tradition performed by cancer patients to mark the end of their chemotherapy or radiation treatment as hosts GMA, 52, and her 57-year-old mother, Jean Muggli – who rekindled their fractured relationship built up after learning of their teen’s diagnosis – encouraged her.

She revealed she was looking forward to ‘healing her head’ as she took viewers through her final radiation treatment, with both her family and nurses rallying behind her with hugs and applause.

In the clip, which was posted to her YouTube channel, Isabella wore jeans and a sweater as she revealed she had to wear a “metal dress” during the treatment.

Before going to hospital, she said: ‘It’s been a long six weeks and I’m really happy that after all this I can finally heal my head because the side effects and everything gets to you.’

She revealed she would have her entire squad with her to cheer on the festive occasion – adding that sister Sophia, Michael and Jean would all be there.

After arriving at the New York Proton Center in Harlem with her family, she checked in and entered the room for her final round of treatment.

When she finished, she walked out and was welcomed with applause by her family and her nurses.

Jean and Michael – who went through a ‘terrible divorce’ in 2006 – got together and filmed the tear-jerking moment before hugging their daughter.

Isabella burst into tears before admitting that she “never thought I would ring the bell,” a tradition that started in 1996 when US Navy Vice Admiral Irve Le Moyne decided to bring a brass bell to his final treatment , following the naval tradition. ringing a bell, ‘when the job is done.’

The family celebrated by going out for dinner and grabbing some Thai food before ending the video with some bedtime thoughts.

Although Michael and Jean went through a nasty legal battle after their divorce, they are now trying to repair their relationship for the sake of their daughter.

Last week, an insider revealed exclusively to DailyMail.com how, despite the pain, his daughter’s ongoing ordeal has helped mend his fractured relationship with his ex-wife – with whom he shares Isabella and Sophia.

“Michael hasn’t had the easiest time dealing with this,” the source told DailyMail.com.

‘He was a wreck when he first found out, just like any parent.

“He has leaned on his close friends, including those at GMA, and he is doing his best to be strong for her, but it’s not easy.”

The insider continued: “He has moments of complete breakdown. Fortunately, this type of cancer has a fairly high five-year survival rate. It depends on the treatment.

“He is holding on to hope and has received so much support from his GMA family.”

Revealing how the devastating news brought the former athlete and his ex-wife together, the insider continued: ‘Despite his devastating divorce from his ex-wife Jean, they have come together and put their differences aside to be there for Isabella. This has given Michael more appreciation and gratitude.’

Michael married Jean in 1999, but their marriage ended after seven years. A nasty legal battle ensued, with Jean filing a domestic violence complaint against Michael, which he denied.

The former couple eventually settled their divorce in 2007.

The source added, “Right now, they’re both taking it one day at a time.”

Michael and Isabella revealed the emotional news that she had been diagnosed earlier this month, saying she had to undergo emergency surgery after doctors discovered a tumor bigger than a golf ball at the back of her brain.

They appeared on Good Morning America, with the pair opening up to Robin Roberts about the youngster’s ‘serious’ diagnosis.

Up-and-coming model Isabella smiled as she told Robin, “I feel good, not that bad.” I’m really excited that this whole process is over, but you just have to keep living through the whole process every day.”

She also had to undergo the egg freezing process because the radiation and chemotherapy could affect her fertility.

While talking about her future, she revealed that she was “looking forward to going back to college and moving back to California and just starting my whole college experience (over).”