Getty Images

Here's What Celebrities Looked Like At The AMAs 4 Years Ago (Photos)

It's finally time for the 2015 American Music Awards.

The 43rd Annual Show will be held this Sunday in Los Angeles and will be hosted by Jennifer Lopez.

Taylor Swift is leading with six nominations for the 2015 AMAs, so things will get interesting because she definitely has some competition this year.

To help prepare for the night (and to get us extra excited), let's look back at what celebrities looked like at the 2011 American Music Awards. You won't believe how much your favorite stars have changed in just four years.

Of course, we have to start with Taylor Swift. Do you even remember the days when she was solely a country singer? And check out that side pony.

WENN

In 2011, "Bad Blood" wasn't even a thing yet. When Taylor won the award for best female artist, she even HUGGED KATY PERRY. They actually embraced a few times, including when Taylor beat Katy for artist of the year. Ugh, memories.

Tae Huynh on YouTube

Just in case you missed the hug, here it is, nice and blown up. What a throwback.

Speaking of Katy Perry, she rocked pink hair that night and won a Special Achievement Award for being the first pop music female to have five number one singles from one album.

Getty Images

She also performed "The One That Got Away" and it was magical.

Anderson Serra on YouTube

Nicki Minaj won favorite rap/hip-hop artist and album and also had pink hair. Her's is more of a light, fluffy, cotton-candy pink. It really brings out her lips.

WENN

She performed with David Guetta and sang "Turn Me On" and "Super Bass." She also wore this metallic outfit.

Amit Ramkissoon on YouTube

Remember when Ellen DeGeneres introduced the world to Sophia Grace and Rosie who became famous for their cover of "Super Bass"? Yeah, they were there too.

WENN

Joe Jonas was also there. Doesn't this bring you right back to his "Camp Rock" days?

WENN

He also hugged Sophia Grace and Rosie, so that was cute. Just look at them all, happy as can be.

Of course, we have to talk about Jennifer Lopez. Does this woman freaking age? She's looked 24 for 20 years now.

WENN

She also performed with Pitbull and was an actual goddess, what a surprise.

maicon123rq on YouTube

Selena Gomez and Justin Bieber were still in love and dating at this time. LOOK AT BIEBER'S BOWTIE. LOOK AT SELENA'S SMILE. Young love, man. Young love.

WENN

Justin also performed the song "Mistletoe" off of his Christmas album, so that was a treat. JUST LOOK AT HOW YOUNG HE IS.

CelinishAnime on YouTube

And speaking of Selena, remember when she posed with Taylor, Katy and Nicki to take this photo? THIS IS AN ICONIC MOMENT, YOU GUYS.

Not everything has changed, though. Selena and Taylor were still BFF back in the day. They stood together the whole show.

Ellie Goulding was there as well and presented the award for best R&B/Soul Female artist with Robin Thicke.

WENN

Here's Robin Thicke.

WENN

The award went to Beyoncé, but she was too busy having a baby and promoting her DVD to attend, so she gave acceptance speech virtually. Check out her video below.

FormerlyBeyonceENTTV on YouTube

Rihanna was there only in spirit as well. She won best Soul/R&B album with Loud but was on a world tour. She also gave a virtual "thank you" speech, which you can see below.

AwardsShowNetwork on YouTube

Bruno Mars won favorite punk rock male artist. Nice suit, Bruno. Very handsome.

WENN

Maroon 5 and Christina Aguilera performed "Moves Like Jagger" and killed it. Check out those curls on Christina.

andron544 on YouTube

And look at Maroon 5, AWW. This was before Adam decided to shave his head on "The Voice."

WENN

My girl Adele won favorite pop/rock female artist but also couldn't attend because she was recovering from vocal chord surgery. WHO PICKED THIS DATE? Clearly it conflicted with lots of people's schedules.

AwardsShowNetwork on YouTube

And last but not least, LMFAO ended the night and sang "Party Rock Anthem." This sh*t was my high school jam -- 2011 was quite the year.