Britney Spears delighted fans as she sizzled on stage at the Billboard awards.

She opened opened the show at the T-Mobile Arena, where she was honoured with the Billboard Millennium Award for “career achievements and influence on the music industry”.

She is only the third person to receive the award after Beyonce in 2011 and Whitney Houston in 2012.

Wearing a red sequinned bra and red knee-length boots, she performed a medley of her hits including Womaniser, I’m A Slave 4 U and Toxic.

However, her arrivals outfit on the red carpet didn’t sizzle as much.

Here’s a look at her key looks of the night:

1. She went for the minimalist (no trousers) look on the red carpet.

2. She covered up later on in the media room as she posed with her gong

Britney Spears
Britney Spears (Richard Shotwell)

3. This is classic Britney

Britney Spears on stage
Britney Spears on stage (Chris Pizzello/AP/Press Association Images)

4. Before she stripped down to the bare essentials, she was rocking this cute red dress

Britney on stage
Britney on stage (Chris Pizzello/AP/Press Association Images)

5. Her fans love her no matter what she’s wearing though…

6. #squadgoals

The fan love for Britters is immense, just take a look:

Welcome back, Britney.