The first clothing humanity put on their bodies was either a sheered animal or the first animal sacrifice.  Genesis 3:21 says,

The LORD God made garments of skin for Adam and his wife and clothed them.

So, the fact that the Lord God made the garments out of skin makes me select the latter - animal sacrifice - because an animal needs it's skin to survive.  Joseph Prince agrees with this by stating, 

"The Bible says that after Adam and Eve sinned by partaking of the tree of knowledge of good and evil, God 'made tunics of skin, and clothed them.'  The first time an animal was sacrificed to cover man's sins happened right there in the garden of Eden.  All the animal sacrifices in the Old Testament are shadows of Jesus Christ, who is the substance." (Destined To Reign, pp.219-220)

Since Father God sent His Word in flesh, Jesus, to visit humanity and redeem our relationship with Him, Believers in Christ can find three better outfits provided by our Lord.

  • Believers are clothed in His salvation because of Christ's sacrifice on the cross and resurrection from the grave.  
I delight greatly in the LORD; my soul rejoices in my God. For he has clothed me with garments of salvation and arrayed me in a robe of righteousness, as a bridegroom adorns his head like a priest, and as a bride adorns herself with her jewels. - Isaiah 61:10

  • Believers are clothed with power from on high because of the need to execute God's will for our lives.  
I am going to send you what my Father has promised; but stay in the city until you have been clothed with power from on high." - Luke 24:49

  • Believers will be clothed with a perfected body for heavenly and earthly dwelling because John 14:3 promises - And if I go and prepare a place for you, I will come back and take you to be with me that you also may be where I am.
When the perishable has been clothed with the imperishable, and the mortal with immortality, then the saying that is written will come true: "Death has been swallowed up in victory." - 1 Corinthians 15:54 
Meanwhile we groan, longing to be clothed with our heavenly dwelling, because when we are clothed, we will not be found naked.  For while we are in this tent, we groan and are burdened, because we do not wish to be unclothed but to be clothed with our heavenly dwelling, so that what is mortal may be swallowed up by life. - 2 Corinthians 5:2-4

For the Believer, what awesome digs to serve the King in.  First, the garment of salvation which is woven together with forgiveness, mercy, and grace - to name a few - covers us.  Second, our relationship with God through Christ allows us to draw from His covering of power on a daily basis in order to mature in our lives and help others in the strength and might of the Holy Spirit.  Finally,  God has a third clothing line for us to eagerly await - our sinless and sick-less bodies - Listen, I tell you a mystery: We will not all sleep, but we will all be changed-- in a flash, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, the dead will be raised imperishable, and we will be changed. - 1 Corinthians 15:51-52  

All Believers are clothed in a line of clothing immeasurably better than the first garments given to humanity.  In fact, this line of clothing is the best you could ever possess!  Now wear it well!