What is the significance of the bath scene involving Mrs Pearce and Liza in Pygmalion?

The bath scene involving Mrs. Pearce and Liza in "Pygmalion" serves as a symbol of Liza's transformation from a lower-class flower girl to a refined lady. It highlights the contrast between her former dirty and unkempt appearance to her now clean and elegant self, representing her journey towards social mobility and acceptance into higher society. Additionally, the scene underscores the theme of the importance of outward appearances in shaping one's identity and how presentation can influence one's social standing.