What is oh my stars and garters?

Here's some information about "Oh my stars and garters":

"Oh my stars and garters" is an exclamation of surprise, shock, or excitement. It's considered an antiquated and somewhat humorous phrase, rarely used in modern conversation. It falls into the category of minced oaths or euphemisms. It is similar to exclamations such as "Oh my gosh" or "Good heavens". The phrase's origin is somewhat debated, but the "stars" likely refer to celestial bodies or simply denote something shining or wonderful. "Garters" possibly refer to decorative or functional bands used to hold up stockings, and may have been considered a slightly risqué or fashionable item in a bygone era. The combination creates a nonsensical, slightly silly, and thus less offensive expression than potentially stronger exclamations.