Twinkle Toes Ballerina Party Invitations. 8 invitations/envelopes per package, each measuring 4in x 5in. Front cover reads: You're Invited! Inside: Spaces for the guest of honor, date, place, time and to RSVP. Approximately 4in x 5in. Tutus and Tiaras! Celebrate your little ballerina's next birthday that's right en pointe!