Heidi Montag Claims Lady Gaga Derailed Her Pop Career: 'I Was a Potential Rival'

Heidi Montag take son Gunner, four, out on his bicycle with training wheels

'Potential Rival’? Heidi Montag Claims Lady Gaga Interfered With Music Career

Heidi Montag Accuses Lady Gaga Of Sabotaging Her Music Career: She Stole My Song