i bought BEYONCÉ twice and Dirty Gold by Angel Haze twice. they're the two most recent examples i can think of.

Warrior 3 times
2 deluxe
1 standard


animal 2 times

Glorious, Halcyon and Born This Way

Born to Die. I got myself a physical copy when it first came out and then bought the Paradise Edition later that year. Other than that, none, I think.

I have seven copies of Bangerz.

6 of them with different covers and one deluxe.

Like 6/7 The Fame versions.
6/7x Fame Monster.
3x Born This Way
3x ARTPOP

The Fame Monster, I have two deluxe copies with The Fame

I also have a copy of The Fame

lord...

Britney Jean

I have multiple copies of all of her albums, but Britney Jean is the one I bought the most

Not on purpose, but my friend,uncle and mom all got me Artpop cd for christmas and 1 digital copy. I have 4 artpop album

I bought DEMI three times.
A physical CD from HMV UK, a digital copy on US iTunes & another digital copy on Amazon UK

Britney Joan & Blackout

And it hasn't sold more than 700k

Never done this... Yáll are

For all my faves I buy on all physical formats for my collection and an extra deluxe for my car.

The 20/20 Experience - Part 1 and 2 : 2 standard, 4 deluxe, 2 vinyl, The Complete Experience: cd and vinyl boxset
MDNA - vinyl, standard, 2 deluxe, digital
Britney Jean - 2 deluxe, standard, Japan edition
MDNA World Tour - 2 physical copies and digital
In The Lonely Hour - 2 vinyl (one signed), Target edition, 2 deluxe (one signed), standard
ARTPOP - vinyl, 2 deluxe, standard, HMV exclusive edition, Wal-Mart edition
Kiss Me Once - vinyl, limited edition box set, 2 deluxe, standard
Bangerz - 6 deluxe (one of each of the 4 covers and the online only deluxe), standard, vinyl

All of Gaga's albums since I always buy them from iTunes and physically too

Believe Acoustic

The ONLY album i have bought more than once was thriller because that was back when i had cd's and i kept breaking it. but other than breaking a cd there is NO reason to buy more than one copy of an album unless you are giving a copy to somebody else. ok maybe if it's vinyl