"Thank you Nina for coming to see @ourtownbroadway," Holmes captioned a photo of herself and her former 'Dawson's Creek' big sister at the first 'Our Town' Broadway preview

The impromptu meet-up comes after fellow series actor Obi Ndefo died at 51 in late August. The details of his passing have yet to be released.

Katie Holmes and Nina Repeta had a mini 'Dawson's Creek' reunion backstage at the Broadway preview of Our Town.

Nina Repeta, who played Katie Holmes' on-screen sister in Dawson's Creek, visited Holmes on the opening preview night of Our Town at Broadway's Barrymore Theatre in New York City. Holmes shared the reunion on Instagram,

Katie Holmes is no Broadway newbie at this point, but it seems one of her Dawson's Creek co-stars didn't want to wait (cue Paula Cole) to see her friend on stage in Our Town. Holmes—who is starring in the revival of the Pulitzer Prize-wining play alongside Big Bang Theory alum Jim Parsons—attended its red carpet premiere on Tuesday,