Trace Cyrus was adopted by Billy Ray Cyrus (Miley's dad) so Miley and Trace are siblings. Trace Cyrus is Miley's half-brother. Trace and Miley share their mom. Trace is 20 (as of 2009. his birthday feburary 24. .
Miley Cyrus has 2 half brothers. One is Christopher Cody Cyrus and the other is Trace Cyrus. Trace Cyrus is in th band "Metro Station".Chirstopher lives in Tennessee and Miley is now in California. Trace Cyrus lives with Miley. But Miley has bigger advantages than Chris and Chris is in poverty/