Elvis' daughter wed musician/producer Michael Lockwood in Kyoto, Japan, Jan. 22, "Entertainment Tonight" reported.
Riley, 16, was maid of honor and Benjamin, 13, was a groomsman, "ET" said.
Lockwood is the musical director of Presley's band, which also includes Keough as a musician.
In addition to Keough, Presley was married to Michael Jackson and actor Nicolas Cage. Both unions lasted about two years.
Ukrainian protestors topple Lenin statue [VIDEO]
Reindeer recovered after escaping from Santa during lighting ceremony