The Champions League final was halted inside the first minute because of pitch invaders, with one taking a selfie with Real Madrid star Vinicius Junior.
The final between Madrid and Borussia Dortmund was stopped almost immediately after kick-off.
Two invaders were removed by Wembley Stadium security staff, but then another person ran onto the field to the visible annoyance of some players. It took four security staff to apprehend the last invader.
All three invaders sported T-shirts bearing the name "Mellstroy", a controversial Russian blogger who offered £300,000 ($572,000) to anyone who stormed the pitch wearing his name.
All three are likely to be banned for life from future football matches and face heavy financial sanctions.
Once play resumed, Junior eventually scored and sealed a record-extending 15th European Cup for Real Madrid, winning 2-0.
The Brazil forward doubled Madrid's lead in the 83rd minute, nine minutes after after Dani Carvajal headed the Spanish giant in front.
Victory sealed a record-extending fifth Champions League title for coach Carlo Ancelotti, his third with Madrid.
Meanwhile Carvajal, Luka Modric, Toni Kroos and Nacho have won European club soccer's biggest prize on six occasions to equal the benchmark set by Madrid icon Paco Gento.
Dortmund paid the price for not making the most of its first-half dominance when Madrid goalkeeper Thibaut Courtois pulled off a series of saves and Niclas Fullkrug hit the post.
Madrid took full advantage after the break.
Carvajal met Kroos's corner at the near post in the 74th to power a header past Dortmund keeper Gregor Kobel.
Jude Bellingham nearly doubled the lead moments later, but then turned provider when slipping in Vinicius. With just Kobel to beat, the forward fired his shot into the far corner and raced off in celebration.
Rock star Lenny Kravitz got the crowd going before kick-off with a pre-game show that included fireworks and some of his biggest hits such as Are You Gonna Go My Way.
It was Vinicius who was dancing after his goal effectively killed off Dortmund's hopes of pulling off one of the biggest Champions League upsets in recent memory.
For a long time, the German side looked capable of halting Madrid after dominating the chances in the first half.
Coach Edin Terzic tactically outmanoeuvred Ancelotti in every department, with Madrid's stars subdued.
Only a combination of Courtois and the frame of the goal kept the scores level at the break after the keeper twice kept Karim Adeyemi from scoring and then watched as Fullkrug's sliding effort came back off the post.
The break clearly helped Madrid and it slowly took control in the second half.
Carvajal's goal came straight from the training ground, with the defender heading over from one corner before eventually converting, while Vinicius put the game beyond doubt.
AP/ABC
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