The 22-year-old Perth-born defender officially leaves Premier League club Aston Villa for an undisclosed fee.

Lowry had joined Millwall on loan in November and has impressed enough to secure a permanent stay after nine appearances for Kenny Jackett's side.

The defender had joined Villa's youth setup in 2005 but only ever managed three first-team appearances for the Birmingham outfit.

Lowry, who had previously spent time on loan at Plymouth Argyle, Leeds United and Sheffield United, is unavailable for Saturday's FA Cup clash against Southampton due to suspension.

Millwall has a history of Australians on their books, with the likes of Tim Cahill, Lucas Neill, Kevin Muscat and Dave Mitchell all past players.

The Lions are currently fighting off relegation, sitting 20th in the Championship, five points above the drop zone.