Because it's all about loving your siblings.
Several Bollywood A-listers took to social media to give their fans a peek into their Raksha Bandhan celebrations.
Rakhi with Bhai!
Bajrangi Bhaijaan hitmaker Salman Khan celebrated Rakhi with sister Arpita Khan Sharma and a bunch of cousins.
Arpita posted a picture and captioned it: 'To the best brother @BeingSalmanKhan in the whole wide world ! Love you happy Rakhi!'
Meet Shahid Kapoor's sister Sanah
Shahid Kapoor took the occasion to introduce his baby sister Sanah Kapur to his fans.
'#rakhi with the sister :):)' he captioned the picture.
Sanah is Pankaj Kapur's daughter with second wife Supriya Pathak. She will be making her acting debut in Vikas Bahl's upcoming film Shaandaar which stars Shahid and Alia Bhatt as leads.
Raksha Bandhan at the Kapoors'
Rishi Kapoor was to the point with his own Rakhi picture caption.
'Raksha Bandhan happened with all family,' he wrote with his photograph with brother Randhir and sisters Reema Jain and Ritu Nanda.
Priyanka takes a trip down the memory lane
Currently shooting for her American series Quantico in Montreal, PeeCee got nostalgic as she wished her brother Siddharth on Twitter.
She shared an old photograph and tweeted: 'Me n my brother @iamsidchopra as kids.. Good times #flashbackfriday.'
'What a wonderful day..my favourite memories of rakhi are tying a bajazillion Rakhis on my brothers hand cause all the cousins would send too. Then we would show off that he was most loved as he had the most Rakhis! He would cook me my favs! Miss u,'; she added.
Hrithik spends time with Sussanne's family
Hrithik celebrated the festival with former in-laws -- Farah Khan Ali, Zayed Khan (Sussanne's siblings), and Ajay Arora (third Khan sister Simone's husband).
Farah posted a collage of pictures and wrote: 'With my Rakhee brothers. Happy Raksha Bandhan.'
Varun Dhawan's rakhi-ed too
Actor Varun Dhawan took to Twitter to wish his fans.
He posted a picture of himself with his cousin and wrote: 'Happy rakshabandhan.'
'Love Rakhi because I can stuff myself with laddoos'
Bipasha is all about gluttony on Raksha Bandhan, or so her caption let on.
She celebrated Rakhi with friends Sohum Shah and designer Rocky S.
'My Brothers. Love Rakhi because I can stuff myself with laddoos! Feel like one too,' she wrote with this picture.
Krishika Lulla bonds with Akshay Kumar
Film producer Krishika Lulla posted a picture of herself with Akshay Kumar and wrote: 'Bonding time with my brother.'
Meanwhile, Akshay Kumar shared a video on Twitter and wrote: 'Somethin spontaneous on #RakshaBandhan wid my partner in crime since childhood, my sis Alka. Here's 2 never growin up.'
Randeep Hooda shows off his muscles
Hooda shared a picture of himself with sister Anjali Hooda Sangwan and tweeted: 'wow to nurture and protect .. #RakshaBandhan #SiblingLove.'
Kalki Koechlin's day out with Richa Chadha
Actress Kalki Koechlin spent the day with her Jia Aur Jia costar Richa Chadha.
She shared a picture of them together and tweeted: 'Shakti sisters #Rakhi #spreadtheshakti.'
Amitabh Bachchan flaunts his Rakhis
Amitabh Bachchan took to Twitter to post a picture of his wrist and tweeted: 'Raksha Bandhan .. and the love and affection of sisters .. on my wrist !!'
'Raksha Bandhan ki anek badhai .. prem ka sagar behta rahe behnon ke prati,' he added.
Anushka Sharma: We've come a long way!
Anushka Sharma was with her brother Karnesh Sharma for the day.
She shared pictures from the celebrations and tweeted: 'My best friend. My anchor. From fighting over the TV remote to making films together ... We've come a long way.'
Shraddha's all about cuteness overload
The Kapoor girl celebrated the festival with her actor brother Siddhanth and shared a childhood photograph.
'Blessed to tie Rakhi every year to my 2 precious brothers. Happy Raksha Bandhan bros,' she wrote.
Subhash Ghai's Sonakshi Sinha connection
Filmmaker Subhash Ghai celebrated the festival with yesteryear actress Poonam Sinha, who happens to be Sonakshi Sinha's mum.
He posted a picture of them together and wrote: 'One of my finest rakhi sister poonam sinha since 45 years brings happiness to me on every Raksha Bandhan- finest lady.'
Lata Mangeshkar's Rakhi with Dilip Kumar
Veteran Lata Mangeshkar also turned to Twitter to wish her fans.
She shared some old photographs and tweeted: 'Namaskar. Aap sab ko Raksha Bandhan ki bahut shubh kaamanayein.'
Shruti Haasan's shoutout to Rakhi brothers
Actress Shruti Haasan took to Twitter to wish her Rakhi brothers.
She shared an old photograph of her and sister Akshara Haasan and tweeted: 'Happy rakshabandhan to @sanjay_act and @inky_pinky_poky love you thambis!!'
Neil Nitin Mukesh's day with his sister
Neil Nitin Mukesh posted a picture of himself with his sister Neha and tweeted: 'My strength my Best friend my World My Sister. Happy Raakhi Ne!!!.'
Can you guess who this actress is?
Mallika Sherawat posted a throwback photograph of herself with brother Vikram Lamba and tweeted: 'Happy Rakshabandhan, me and my brother :)'
Adorable max, no?
Elli Avram is all about Rakhi too!
Swedish starlet Elli Avram, who will be seen opposite Kapil Sharma in Kis Kisko Pyaar Karoon soon, shared a picture and tweeted: 'Hope you all had a beautiful #RakshaBandhan !!! Missing my brother so much today. The Avrams.'