Two of the following proverbs have similar meanings. Which ones are they?

Question

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Put your best foot forward means that you should always try your best no matter the situation.
First impressions are most lasting means that people should always try to do their best because that impression will last.
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If two or more people are as thick as thieves, they are very good friends and share their secrets.
Beggars can't be choosers means that people without options must accept whatever is being offered.
Beauty is only skin deep means that physical beauty has no relation to goodness. In other words, character is more important than looks.

Two of the Following Proverbs Have Similar Meanings