Marina & the Diamonds
Charli XCX
Bat For Lashes (never topped Fur & Gold)

Oooh this!

Tragic.

Beyonce

Ohh yess.

Same for James Blunt & Pixie Lott.

evanescnence
Let go but its close to UMS
Imagine dragons

I honestly can't think of one -esp by any of my faves. I usually think the 2nd or 3rd albums are the best (FROOT, Halcyon, Ultraviolence, Laundry Service, etc.)

Shakira

Marina and the Diamonds. All her followups have been tragic in comparison.

Jessie J - Who You Are
Ellie Goulding - Bright Lights (Maybe)

Christina AguilerA
Lady Gaga

Let Go
Born to Die
The Family Jewels

disagree about the Arctic Monkeys . AM is their best, sorry, but it's true.

Ariana Grande

Future

can't think of anyone who has more than two albums...

Avril Lavigne - Let Go
Lady Gaga - The Fame
Maroon 5 - Songs About Jane
Evanescence - Fallen
Lana Del Rey - Born to Die
Ariana Grande - Yours Truly
Ed Sheeran - +
Destiny's Child - The Writing's On the Wall
Gwen Stefani (solo) - Love. Angel. Music. Baby
Hilary Duff - Metamorphosis
Ashlee Simpson - Autobiography
Jason Derulo - Jason Derulo
Jessie J - Who You Are
Jordin Sparks - Jordin Sparks
Kesha - Animal
Leona Lewis - Spirit
Nicki Minaj - Pink Friday
OneRepublic - Dreaming Out Loud
One Direction - Up All Night
Whitney Houston - Whitney Houston

Salewise Ciara (But Self-titled is musically better)

Avril Lavigne (Let Go)
Lady Gaga (The Fame)