Rob Lowe's Son Matthew Marries Emily Markus in Star-Studded Wedding, Gwyneth Paltrow Officiates – See the Celebrity Guest List!

Getty Rob Lowe is celebrating a major family milestone! The 62-year-old actor's eldest son, Matthew Lowe, 33, married Emily Markus in a star-studded ceremony in Santa Barbara, Calif., on Saturday (October 10). The wedding brought out some major celebrities, with Gwyneth Paltrow serving as the officiant! Katy Perry, Cameron Diaz, Chris Pratt, Zoe Saldaña and more stars were among the guests, according to People and Page Six. Who Attended Matthew Lowe and Emily Markus' Wedding? The celebrity guest list included Adam Levine and wife Behati Prinsloo, along with Maria Shriver, Katherine . . .