Britney Spears' loved ones show their support after she checks into mental health facility

Britney Spears' loved ones are standing firmly behind her after news broke that the singer has checked herself into a mental health facility.

Spears' younger sister, Jamie Lynn, took to Instagram on Wednesday to share a throwback photo, making her big sister her #WCW (Woman Crush Wednesday) this week. The picture adorably shows Jamie Lynn getting off the bus with Britney on her first day of school.

"Yup, she rode the bus home with me after my first day of school, cuz sheโ€™s the fn best #WCW," she captioned the post.

The "Toxic" hitmaker's boyfriend of about two years, Sam Asghari, also shared his love for Britney on Instagram following the news, reposting her inspirational quote -- "Fall in love with taking care of yourself, min, body, spirit" -- and adding his own caption.

"It isnโ€™t weakness, Itโ€™s a sign of absolute strength, people should only be inspired by this, at least I am," he wrote.

Meanwhile, Britney's ex-husband, Kevin Federline, also released a statement to ET showing his support, despite their recent battle over child support.

"Kevin commends Britney for recognizing that she needs to take a step back and that she is taking the reasonable steps to dealing with her situation in a responsible way," Federline said through his lawyer, Mark Vincent Kaplan. "He wishes everyone well."

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Britney Spears and Kevin Federline together
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Britney Spears and Kevin Federline together
AMSTERDAM, NETHERLANDS - MAY 6: (UK, US AND CANADA RIGHTS ONLY) Pop superstar Britney Spears and new boyfriend Kevin Federline spend time together in Amsterdam on May 6, 2004 in The Netherlands. Federline is a dancer and the pair have apparently been friends for a while ahead of becoming a couple. (Photo by Dennis van Tellingen/Bruno Press/Getty Images)
Kevin Federline and Britney Spears at the MGM Grand Garden in Las Vegas, Nevada (Photo by Kevin Mazur/WireImage)
LAS VEGAS - DECEMBER 8: Singer Britney Spears and husband Kevin Federline kiss as they arrive at the 2004 Billboard Music Awards on December 8, 2004 at the MGM Grand Garden Arena, in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
Britney Spears and Kevin Federline during 2004 Billboard Music Awards - Red Carpet at MGM Grand Garden in Las Vegas, Nevada, United States. (Photo by KMazur/WireImage)
Britney Spears and Kevin Federline (Photo by Mel Bouzad/FilmMagic)
Britney Spears and Kevin Federline at the Chinese Theatre in Hollywood, California (Photo by Jeffrey Mayer/WireImage)
(EXCLUSIVE, Premium Rates Apply) Britney Spears and Kevin Federline (Photo by James Devaney/WireImage)
Britney Spears and Kevin Federline (Photo by Kevin Mazur/WireImage for People Magazine)
Kevin Federline and Britney Spears with guests during 12th Annual Screen Actors Guild Awards Official After Party hosted by People Magazine and the Entertainment Industry Foundation at Shrine Auditorium in Los Angeles, California, United States. (Photo by
Kevin Federline and Britney Spears during Rolling Stone/Verizon Wireless Pre-GRAMMY Concert with Kanye West - Arrivals at Spider at Avalon in Los Angeles, California, United States. (Photo by Jason Merritt/FilmMagic)
Kevin Federline and Britney Spears during Rolling Stone/Verizon Wireless Pre-GRAMMY Concert with Kanye West - Arrivals at Spider at Avalon in Los Angeles, California, United States. (Photo by Jason Merritt/FilmMagic)
HOLLYWOOD - FEBRUARY 08: Singer Britney Spears (R) and husband Kevin Federline arrive at the SONY BMG Grammy Party held at The Hollywood Roosevelt Hotel on February 8, 2006 in Hollywood, California. (Photo by Vince Bucci/Getty Images)
Kevin Federline and Britney Spears (Photo by Larry Busacca/WireImage for Sony BMG Music Entertainment)
Kevin Federline, Britney Spears and Tyra Banks (Photo by George Pimentel/WireImage for Ogilvy Public Relations)
Kevin Federline and Britney Spears during Belated Birthday Party for Kevin Federline with Britney Spears Hosted by Scooter Braun - Arrivals at Vision Nightclub & Lounge in Atlanta, Georgia, United States. (Photo by Ben Rose/WireImage)
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The former couple's sons, Sean Preston, 13, and Jayden James, 12, "are in the full-time care of their dad" as their mother seeks help for her mental health, Us Weekly reports. Britney and Kevin were married from 2004 until 2007.

Britney sought help this week after realizing that her struggle with her father, Jamie's, worsening health was taking a huge toll on her own wellbeing. Her father has been dealing with severe colon issues since October and has had two surgeries since.

"She seems to be on a constant roller coaster and can't get off. She is finally getting the help she needs," an insider explained to ET. "She is the one who finally decided she needed help and made the decision to manage her own emotions. She finally realized it was affecting her everyday life and even her relationships. She wants to feel better and more relaxed and taking time to focus on herself truly is her only option. It has been a rough year. While those closest to her have encouraged her to get help, she finally decided on her own it was time."

Another source told the outlet that Britney has been "truly isolating herself" from the outside world and has grown even more protective of her two sons. "Her father's illness has frightened her," which caused her to worry more about them and less on herself.

"She has had little communication to the outside world and spends most of her time with the staff and kids," the source explained. "She's truly isolating herself. She is painfully protective of her children and doesn't trust anyone with them. She worries constantly about them. The children are doing fine. She loves them so much and tries so hard with them."

44 PHOTOS
Britney Spears and her kids Sean Preston and Jayden James
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Britney Spears and her kids Sean Preston and Jayden James
Throwback to exploring London with the boys! Can't wait to be back for #PieceOfMe next week! ๐ŸŽ๐ŸŽ๐ŸŽ #TBT
Every year i come back to this tree. It’s beautiful! โญ๏ธโญ๏ธโญ๏ธโญ๏ธโญ๏ธโญ๏ธโญ๏ธ
Love when we go to our favorite spot on Sundays ๐Ÿ’•๐Ÿฅž The boys are bigger than me now!!!!! ๐Ÿ˜œ
Painting feels so therapeutic to me! Getting to do this with my boys on a beautiful day like this is such a blessing!!!
This was from our lil trip to see Aladdin. What a great show!!!!
๐Ÿ ๐Ÿฆ‹๐Ÿ  So much fun at this beautiful place
Me and my boys enjoying the warm weather!!! ๐Ÿ•ถ๐ŸŒด๐ŸŒŠโญ๏ธ
Jumping for joy because school is out for the holidays!! ๐ŸŽ„
Enjoying the holiday break! ๐Ÿ‘Ÿ๐ŸŽ
Going for a walk with my son and the dog always does wonders for my mood...
YES! JOY IS ALL AROUND! ๐ŸŽ„๐ŸŽ๐ŸŽ„
My favorite boys at my house for Thanksgiving!!!! ๐Ÿฆƒ๐Ÿฆƒ
I did this shoot two years ago with my friend @glennnutley... I remember being on my knees, making sure my sonsโ€™ hair stayed straight!! #FBF
Dinner with the boys!!! ๐Ÿ”๐Ÿ”๐Ÿ”
I took these photos of my children before my trip this summerโ€ฆ looking back at the photos I've taken of them, it brings me to my knees everyday to see how blessed I am to have such amazing and inspiring kids!!!!! Letโ€™s stay inspired y'all!!!!! โค๏ธ
My boys!!! #tbt
Brushy brushy brushy!
My son looks so handsome with his new haircut ๐Ÿ’‡โ€โ™‚๏ธ๐Ÿ’‡โ€โ™‚๏ธ๐Ÿ’‡โ€โ™‚๏ธ๐Ÿ’‡โ€โ™‚๏ธ๐Ÿ’‡โ€โ™‚๏ธ
Before Sky Zone!
Miss my boys ๐Ÿ’˜๐Ÿ’˜
Who wants to go to Texas? โ˜บ๏ธ
No homework! Best day ever!
Right before the boys went to their play last week โ˜ƒ๏ธโ˜ƒ๏ธโ˜ƒ๏ธ #tbt
Family time โ˜€๏ธ
My son received an award at school today for being the best encourager!!
โค
The socks ๐Ÿ˜‚๐Ÿ˜‚๐Ÿ™Š๐Ÿ™Š๐Ÿ’œ๐Ÿ’œ๐Ÿ’œ๐Ÿ’œ๐Ÿ’œ๐Ÿ’œ
Photos of my boys taken about a year ago. They're such lovely young men. It's simply the sweetest gift being a mother
Beautiful parrot in Hawaii!
The boys with @kennybritt18! Vote for him for Pro Bowl!! โ˜บ๏ธ
Church with the family!
My son has blue hair!! Wheeee!
Goodbye Hawaii ๐Ÿ˜ข so sad!
Great Vegas trip!
The boys and I saw @disneythejunglebook this weekend and we give it โญ๏ธโญ๏ธโญ๏ธโญ๏ธโญ๏ธโญ๏ธโญ๏ธ
Time for a haircut!
Fun in Vegas!
Dinner with my boys at one of our favorite spots ๐ŸŽ€๐ŸŽ€๐ŸŽ€
I'm so grateful for my wonderful boys!!! I couldn't be more proud of them!! Happy birthday, Jayden and Preston!!!! Love you! โค๏ธโค๏ธโค๏ธ
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Insiders told People that Britney is at an "all-encompassing wellness treatment" facility, where she'll remain for several weeks. 

"Britney just needed to focus on herself," one insider explained. "Her dad being sick has taken a toll on her. He nearly died and actually had another surgery a few weeks ago. Heโ€™s not doing well. Theyโ€™re so close and it has been a lot. There is nothing dramatic going on with her -- she just realized she needs to make sure to take time to care for herself."

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