Welcome, you are invited to Sue, James and Jason's party.

Bienvenido, tu eres (invited)a la fiesta de Sue, James y Jason.

Can someone help me translate "invited" into Spanish?

Gracias!

See

http://www.spanishcourses.info/SpanishVerbs/invitar_conjugate_668_EN.asp

You want the "participio" form in this case.

Bienvenidos, ustedes son invitados a la fiesta de Sue, Jaime y Jasón.

Sra

One minute! I missed the "tú" - Mascuine or feminine, you do not state.

Tú eres invitado (or invitada), etc.

Sra

Bienvenido! Estas invitado a la fiesta de James y Jason

Of course! To translate the word "invited" into Spanish, you can use the word "invitado" for a male, or "invitada" for a female. In this case, since you are the one being invited, the correct translation would be "invitado." So the complete translation would be:

"Welcome, tú eres invitado a la fiesta de Sue, James y Jason."

If you need further assistance with translations or have any other questions, feel free to ask!