The following page contains the description of unlocking the bronze trophy To the Nines in Shadow of the Tomb Raider. The achievement is awarded for restoring and wearing a full set of a historical outfit.
Lara's Outfits can be restored and worn after reaching any camp. Open the characters inventory.
New outfit elements can be acquired after reaching certain points of the game. They may be offered for sale by merchants or awarded for completing crypts or side quests. Having acquired a piece of historical outfit, you'll need to restore it, i.e. spend some resources to properly craft it. Only then can Lara wear her new possession.
To unlock this trophy, we suggest you choose, for example, the Urqu set. Condor Cowl of Urqu is acquired for exploring one of the crypts in Kuwaq Yaku (the one you'll need to open with a shotgun).
Hide Boots of Urqu can be bought from the merchant in Kuwaq Yaku for 4300 gold.
After you acquire each piece of the outfit, you'll need to spend some resources to restore it. This will enable Lara to wear the outfit. Of course, you don't need to choose same outfit we did for this example. You can pick your favorite outfit from a complete list, provided by our guide under Lara's Outfits.