This file photo taken on Jan. 9, 2016, shows the band of India's Rashtriya Swayamsevak Sangh (RSS) as they take part in the "Shrung Ghosh Path Sanchalan" (Route March by Brass Band) by RSS cadets in Bangalore. A hardline Indian Hindu movement announced March 13 that it was abandoning its trademark khaki shorts to try to modernize the dress code, 91 years after adopting the austere military-style uniform. / Getty

It is the most talked about dress code in India this weekend.

India’s largest and most strident Hindu nationalist organization, the Rashtriya Swayamsevak Sangh is changing. No, not its core beliefs of Hindu supremacist pride. But its dress code.

Members of this 91-year old group of which Prime Minister Narendra Modi is part, traditionally wore loose khaki shorts, high socks and white shirts. The group conducts military-style drills, bamboo stick fights and sings hymns to the Indian motherland in small neighborhood parks across India at dawn.

But now the khaki shorts, the signature look of a member, is going to be replaced with brown pants.

“We have decided to replace khaki shorts with brown-colored full pants,” said Bhaiyyaji Joshi, one of the top leaders of the Rashtriya Swayamsevak Sangh, or RSS. “Full pants are more common in normal life, so we have accepted it now. We are a group that moves with the times.”

RSS’s critics in India often lampoon its trademark wide shorts and derisively call its members “chaddi” or shorts. They routinely post awkward photographs of its overweight members in the loose shorts.

The RSS, which is Hindi for National Volunteer Corps, seeks to unite Hindus and restore national pride after centuries of Muslim invasions and foreign rule. But its belligerent rhetoric has often spurred Hindu-Muslim tensions and violence in this officially secular but predominantly Hindu country of 1.2 billion people.

Modi’s election victory in 2014 has pitched the RSS into national spotlight again. Many critics say that the growing popularity of RSS's ideology is changing the secular and liberal character of India’s multi-religious society.

On Twitter, many welcomed the long-awaited change as a sign of a modernity.

Change in the uniform of RSS is a decisive change, a vibrant organisation keep changing external features remaining firm on ideology — Dr Rakesh Sinha (@RakeshSinha01) March 13, 2016

  But critics mocked the change by using a Hindi hashtag that meant “change your thoughts not shorts.”    

 Changed half Chaddi to full, but does it cover narrow mindsets also #ChaddiNahiSochBadlo