bib

your best bib and tucker your best clothes. informal

☞ Bib and tucker originally referred to certain items of women's clothing. A bib is a garment worn over the upper front part of the body (e.g. the bib of an apron), and a tucker was a decorative piece of lace formerly worn on a woman's bodice.

stick (or poke) your bib in interfere. Australian & New Zealand informal