La Toya Jackson, 68, sparks concern with 'frail' social media post three months after the death of her beloved brother Tito

La Toya Jackson sparked concern among fans with her latest social media post. 

The middle daughter of the Jackson family, 68, took to Instagram on Saturday to share a video of herself enjoying the sights of Qatar. 

In the clip, La Toya donned a fitted jumpsuit and gold heels as she walked around her hotel and posed against the backdrop. 

She captioned the clip: 'Happy holidays guys! Welcome to Qatar! #Qatar #doha #fun #work #instagood #life #hoildays #photooftheday #love #latoyajackson'. 

Yet fans were quick to point out that she looked slimmer than usual, taking to the comments section to share: 'LaToya hunnie (and I ask this VERY respectfully and lovingly) what is going on hun? You look TOO frail! I know many people notice but are afraid to ask or bring it up.';

'I pray she's okay'; 'Auntie Latoya Jackson you always look lovely …please do not lose no more weight auntie…God’s blessings always❤️'; ' Hope you're ok'; 'Ummm LaToya I pray all is well with you.' 

The fifth child and middle daughter of the Jackson family is still active in the entertainment industry but chooses to stay out of the limelight and makes infrequent public appearances.

She gave fans a glimpse behind the scenes with her 2011 memoir Starting Over, and has appeared on multiple reality TV shows, including Life With La Toya.

MailOnline has contacted La Toya's representatives for comment.

The post comes after she paid tribute to her beloved brother Tito, who suffered a fatal heart attack on September 15 at age 70.

Two days later, she shared a video with her brother that she captioned: 'The last memory of my brother Tito a kind and gentle soul! 

'He was trying to capture this moment on his phone to pass it to someone. We will always love you, Tito!'

She attended his funeral last month alongside niece Paris Jackson and nephew Bigi (formerly known as Blanket) in Glendale, California.

Tito told his friend Terry Harvey Maltbia he 'couldn't breathe' and 'wasn't feeling good' moments before he was rushed to a New Mexico hospital where he later died of a heart attack.

Terry, who is also Tito's business associate, told DailyMail.com that he and the singer were in Gallup, New Mexico and stopped for food before getting back on the road and heading to Jackson's ranch in Oklahoma.

Terry, Tito and another friend, Ronald Balfour, were on a road trip to California, where the trio planned to pick up Tito's vintage cars from his home.

'We just got done eating turkey and chicken, laughing and talking,' Terry said. 'We were putting the top on the convertible because it started raining. 

'That's when Tito came back on the passenger side window and said, "My chest is hurting. Can you help Ronnie to finish the top?"'

Tito is survived by nine grandchildren and three sons — Taj, 51, Taryll, 49, and TJ, 46 — from his 16-year marriage to Delores 'Dee Dee' Martes, which ended in 1988.