There are several ways to identify an actress in a picture. One option is to use an image recognition tool such as ImageRecognize.com, which uses machine learning to identify not only the actress but also other objects in the image. Another option is to use a reverse image search engine like Google Image Search, which allows you to search for information about an image by uploading it or entering its URL. To use Google Image Search, simply find the image you want to search with, upload it or enter its URL, and Google will attempt to find other copies of the same image on the internet as well as provide visually similar images. Additionally, there are apps such as ActorDetector, which use face recognition powered by AI to detect celebrities, including actors and actresses, in images.