The American songstress, 26, looked sensational in pink co-ords emblazoned with ruffles and shoulder pads as she delighted a crowd of 20,000 with the show.
Ariana will play three nights in London before heading North to perform at Manchester Pride next Sunday.
Gorgeous: Ariana Grande, 26, kicked off the UK leg of her Sweetener world tour in spectacular fashion on Saturday night, with a sensational show in London’s O2 Arena
As ever Ariana looked sensational as she sported her signature crop top and skirt combo, this time boasting plenty of extra pink ruffled detailing and a belt to cinch in her slender waist.
The Break Free hitmaker pulled back her brunette tresses into their signature ponytail, before accessorising her look with knee-high PVC boots.
Ariana strutted across the stage in her towering boots as she delivered yet another show-stopping performance, before changing into a similar sparkling red bralet and matching skirt.
The star later changed into a quirky checked top and matching skirt as she performed a medley of her biggest hits to the delighted crowd.
Amazing: The American songstress looked sensational in pink co-ords emblazoned with ruffles and shoulder pads as she delighted a crowd of 20,000 with the show
Beautiful: As ever Ariana was sporting her signature co-ords ensemble as she took to the stage for another epic show
Flawless: The Thank U, Next hitmaker sported a pale pink studded crop top with a dramatic flared skirt and her signature knee-high PVC boots
Dazzling: Ariana later changed in a sequinned crop and skirt in the same style as she wowed the crowd with a collection of her biggest hits
Jaw-dropping: As ever Ariana was sporting her signature ponytail, as she performed the first of three concerts in London
Ariana kicked off her Sweetener World Tour in March with a show before Albany, before travelling across the United States and Canada to perform 33 shows across five months.
The Thank U, Next songstress has now travelled to Europe where she will perform two more shows in London, before travelling to the Netherlands for two nights.
Ariana will then travel to Manchester for a special performance at their annual Pride celebrations on Sunday (August 25th), over two years from the 2017 terrorist attack that took place at one of her concerts.
The star bravely returned to the city weeks later for the One Love gig, which to raise funds for the families of victims of the terror attack which left 22 people dead.
Superstar: Ariana’s London show was the first in Europe for her Sweetener World tour, after spending five months travelling around the United States and Canada
Perfect: The star later changed into a quirky checked bralet, matching skirt and towering boots
Energetic: Next week the star will also travel to Manchester to headline their annual Pride celebrations
Seamless: Ariana wowed the crowd with her incredible performance as she began the UK leg of her international tour
Last week Ariana took to Instagram to thank her fans for their support, following the release of two back-to-back studio albums.
‘Real protective wit my soul where ….. u been [a dream] got to drop so much music i love this year with so many people i love and that was made with so much love. i’m a grateful grateful girl. thank u all for listening and for supporting me and my friends,’ she started out.
‘what a special year it’s been. stepping back to appreciate and to say thank u. we get so wrapped up in our other s**t / in schedules and work etc that we forget to do that sometimes but …. thank uuuuu.
‘instead of focusing on what could be better or what is currently making you anxious, say thank u for what u already have. what u put your energy into expands. spend it wisely.’
Reflecting: Last week Ariana took to Instagram to thank her fans for their support, following the release of two back-to-back studio albums
Touching: In the length post she wrote: ‘i’m a grateful grateful girl. thank u all for listening and for supporting me and my friends’
Sweet: The star added: ‘what a special year it’s been. stepping back to appreciate and to say thank u’
The star also reminisced on Twitter on Saturday that it was the eight year anniversary of her signing with Republic Records.
‘Signed to @republicrecords eight years ago today and released my debut album six years ago…
‘thankful for my republic family and deeply proud of every project we’ve released together. music is the most special thing in the world. thank u for believing in me and my voice,’ she wrote.
Throwback: The star also reminisced on Twitter on Saturday that it was the eight year anniversary of her signing with Republic Records