Reunited: Russell Brand and Katy Perry back in each others' arms after I Kissed A Girl star jets to LA to appear on Oprah

Me and my girl: Katy Perry and Russell Brand after the singer's surprise performance on Oprah Winfrey's post-Oscar show

Russell Brand and Katy Perry have been reunited after the singer flew back from her world tour to make a surprise guest appearance on Oprah Winfrey's post Oscars show in Los Angeles.

Wearing a tight gold floor length dress with a maroon bow around the middle, the star had flown 13 hours just to sing her single Firework with a children's choir on the show, Oprah's Ultimate After Oscar's Party, held at the city's Kodak Theatre.

The I Kissed A Girl star's surprise performance on the show, backed by PS22 from Staten Island, even included indoor fireworks to go with the song - and afterwards, her husband Russell picked her up to whisk her home so they could re-create their own...

Glamorous: Despite jetting in overnight to appear on Oprah, the star still looked stunning

Katy had flown straight from her show in Vienna, Austria, on a red eye flight to sing with 'these beautiful children who I saw on YouTube.'

After the performance, the youngsters students huddled around Katy, exchanging high fives.

Earlier, Katie had Tweeter: '13 hours later I’m back in sweeeet Los Angeles… and boy do I have a secret for you! GOOD MORNING!'

Beaming: The couple seemed thrilled to be reunited after time apart while Katy launched her California Dreams world tour in Europe

Let's go! The funnyman got ready to drive off his wife in his brand new Range Rover after her appearance on the show

Afterwards, she gushed that it had all been worthwhile, even though she had to fly straight back to Europe today ready for her next date on the tour.

Posting on her Twitter: 'Today was such a beautiful day. PS 22 & Oprah made ME feel like a firework... refocused me & reminded me of my purpose. Thank you.'

Surprise: There were screams from the audience when Katy appeared in the middle of the school choir onstage at the Kodak Theatre

Big fans: The star was mobbed afterwards by the PS22 choir, who are all from Staten Island

Her husband was clearly as blown away by her performance as the others in the audience, posting on his official Twitter afterwards: 'Did you see my missus on Oprah? With that PS 22 kids choir! So cute! So sexy! (Kids cute, missus sexy- if that needs clarifying)'

Katie looked glamorous in over-the-knee tan stiletto boots and a big fluffy fake fur gilet over a nude coloured belted mini sweaterdress, with aviator-style shades as they left the studio.

On song: The I Kissed A Girl singer appeared on Oprah Winfrey's annual post-Oscars show

Russell was grinning from ear-to-ear as he hopped into his new Range Rover and gave his wife a proud kiss before they sped off into Hollywood together.

It's the first time the pair have been able to spend quality time together for weeks - even if just for the night - due to their hectic work schedules.

Mother's pride: The comedian turned actor took his mother Barbara as his date to the Oscars at the weekend

Katy kicked off her California Dreams world tour last week in Europe and is flying back out to be ready to play the Max-Schmeling-Halle in Berlin on Friday.

The star also starts the UK leg of the tour on March 17 at the HMV Hammersmith Apollo.

Little gold man: Russell and his Arhtur co-star Helen Mirren presented the Best Foreign Language Academy Award to Susanne Bier, director of In a Better World, on Sunday night

Russell meanwhile has started on the promotional treadmill for his new movie Arthur, the remake of the 1980s Dudley Moore classic, which he stars in alongside Dame Helen Mirren.

Russell and Helen presented an Oscar together at the weekend too, handing out the Academy Award for Best Foreign Film to Dane Susanne Bier for her movie In A Better World.

The funnyman had taken his mother Barbara along as his date at the event.

Katy Perry "firework" Oprah's Ultimate After Oscar Party

source: dailymail