The 21-year-old 'All About That Bass' singer's first collection 'Title' sits atop the Billboard 200 chart this week, after selling 195,000 copies over the past seven days.
Combined with streaming data under Billboard's new chart formula, 'Title' achieves the number one position with 238,000 equivalent units earned.
The album features Trainor's global smash 'All About That Bass', as well as follow-up hit 'Lips Are Movin'.
The figures also made 'Title' the biggest female debut in five years, since Susan Boyle's 'I Dreamed a Dream' logged 701,000 first-week sales back in November 2009.