Laura and Erwin put on their masks before getting off the carriage, and it didn't surprise Laura that all eyes were on them, wanting to see their faces hidden by the mask.
Erwin got out of the carriage extending a hand to Laura, who looked dazzled with his actions. She wasn't used to his gentleman act though he is one.
To not be rude and suspicious, Laura accepted his hand and carefully got out of the carriage, and heard some Nobel gasping out loud. They both ignored their reactions and moved on.
There is no point in fighting an endless battle.
Laura's hair did stand out amongst the crowd, but Erwin's hair stood out more. Everyone in the empire knew this. Having silver hair means you are part of the royal family. And it was rare to see someone of royal daily.