"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.

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,

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,