Don't judge others by appearance. Remember that God looks beyond that. It's in the Bible, I Samuel 16:7, NIV. "The Lord said to Samuel, "Do not consider his appearance or his height, for I have rejected him. The Lord does not look at the things man looks at. Man looks at the outward appearance, but the Lord looks at the heart."
Appearances can be deceiving, judge on results. It's in the Bible, Matthew 7:16-17, NKJV. “Beware of false prophets, who come to you in sheep’s clothing, but inwardly they are ravenous wolves. You will know them by their fruits. Do men gather grapes from thornbushes or figs from thistles? Even so, every good tree bears good fruit, but a bad tree bears bad fruit. A good tree cannot bear bad fruit, nor can a bad tree bear good fruit. Every tree that does not bear good fruit is cut down and thrown into the fire. Therefore by their fruits you will know them."
The outward appearance of righteousness, is worthless if it is not transparent of the inner chracter. It's in the Bible, Matthew 23:27-28, NKJV. “Woe to you, scribes and Pharisees, hypocrites! For you are like whitewashed tombs which indeed appear beautiful outwardly, but inside are full of dead men’s bones and all uncleanness. Even so you also outwardly appear righteous to men, but inside you are full of hypocrisy and lawlessness."
Our witness is tied with our appearance. It's in the Bible, 1 Timothy 2:9, 10, NEB. "Woman again must dress in becoming manner, modestly and soberly, not with elaborate hairstyles, not decked out with gold or pearls, or expensive clothes, but with good deeds, as befits women who claim to be religious."
Avoid anything that causes confusion about what you stand for. It's in the Bible, 1 Thessalonians 5:22, KJV. "Abstain from all appearance of evil."
We need to accessorize our inner character, not our outer attire. 1 Peter 3:3, 4, NIV says, "Your beauty should not come from outward adornment, such as braided hair and the wearing of gold jewelry and fine clothes. Instead, it should be that of your inner self, the unfading beauty of a gentle and quiet spirit, which is of great worth in God's sight."
When Christ came, His appearance was not attractive. It's in the Bible, Isaiah 53:2, NIV. "He grew up before him like a tender shoot, and like a root out of dry ground. He had no beauty or majesty to attract us to him, nothing in his appearance that we should desire him."