What fabric is a fine, plain weave, often made of cotton and used for items like baby clothes?

Batiste is indeed a fine, plain weave fabric that is typically made from cotton or a cotton blend. It has a lightweight and soft texture, making it ideal for delicate applications such as baby clothes, where comfort and breathability are essential. The fabric's smooth finish and gentle drape contribute to its suitability for garments worn against sensitive skin, such as those of infants.

In contrast, muslin, while also lightweight and soft, is generally coarser and is often used for items like unbleached cotton fabric for pattern making or as a lightweight curtain. Crepe features a unique crinkled texture and is commonly used for structured garments rather than soft baby clothes. Denim is a heavier, more durable fabric primarily used for jeans and is not suitable for delicate items. Thus, batiste is the best fit for the context of the question and the specific requirements for baby clothing.