I've never met any.
Here on earth, perfect sinless Christians don't exist.
Let me introduce myself.
I have been in Christ for fifteen years, and there is no sin in Christ.
Without being reborn, no man shall see heaven, so my rebirth was essential to living without sin.
To be reborn, a new creature, I had to first kill the old man.
That is accomplished at our baptism into Christ and into His death.
We partake of the death, burial, and most importantly we are raised with Christ to walk in newness of life. (Rom 6:3-6)
The results are written of in the seventh verse of Rom 6..."For he that is dead is freed from sin".
Coupled with a real repentance from sin...permanently...what walks the earth now is an ex-sinner who has been sanctified by the blood of Christ.
And as Peter says in Acts 2:38, those who turn from sin and are baptized in the name of Jesus Christ for the remission of past sins will receive the gift of the Holy Ghost.
The Holy Spirit will not enter a defiled 'temple'.
God provides everything we need to remain faithfully sinless, including verses like..."There hath no temptation taken you but such as is common to man: but God is faithful, who will not suffer you to be tempted above that ye are able; but will with the temptation also make a way to escape, that ye may be able to bear it." (1 Cor 10:13)
Look for the escapes, and "sin no more".