Cap-a-pie

If twenty thousand naked Americans were not able to resist the assaults of but twenty well-armed Spaniards, I see little possibility for one honest man to defend himself against twenty thousand knaves, who are all furnished cap-a-pie with the defensive arms of worldly prudence, and the offensive, too, of craft and malice.

Source: wiktionary

I sallied forth cap-à-pie in my Madras regimentals, intending to accompany Brent to Westminster Abbey, and to take a coach at the first stand we came to.

Source: wiktionary

Miss Thorne when fully dressed might be said to have been armed cap-a-pie, and she was always fully dressed, as far as was ever known to mortal man.

Source: wiktionary