Alves had a hand in all of the Italian champions' goals as they beat Monaco 4-1 on aggregate to secure a place in the Cardiff showpiece via Tuesday's 2-1 second-leg victory.
Dani Alves and Mario Mandzukic's strikes in the first half gave Juventus a convincing 2-0 (4-0 on aggregate) lead and thereby confirmed their final berth.
Despite their two-goal advantage, Juventus remained on the offensive as Mandzukic forced a smart save from Monaco keeper Danijel Subasic after being played into the left side of the penalty area.
Real Madrid - who they will likely face in an epic showcase final in Cardiff on June 3 - are obviously a totally different prospect to Monaco.
Juventus have put together one of their best domestic and European seasons in recent memory, looking set to claim the Italian league despite the loss of Paul Pogba to Manchester United in the summer transfer window.
Juventus will meet the victor between Real Madrid and Atletico Madrid in the final in Cardiffon June 3. Real Madrid has lost only three of the 14 Champions League finals they have competed in.
Mandzukic's header was brilliantly saved by Subasic but the goalkeeper could do nothing as his fellow Croatian fired home the rebound.
Films for the Perfect Mother's Day
Without using the word "starch", I basically follow her example in this as well, though I make more one-pot meals than she did. These pictures are so cute that it will make you go 'aww.' You could also do something similar maybe and a little more.
Finalist in 2003 and 2015 with the Old Lady he has come close already, but there is a sense this year will be his final chance. A swift counterattack of the hosts, it seemed, was a failure, but a flawless pass from Dani Alves Mandzukic with two strikes turned into a goal.
They have beaten some quality teams to reach the semi-final stage and they should be proud of that.
Juventus goalkeeper Gianluigi Buffon says that he is desperate to land his first Champions League title this season.
"He is so fit that I think he could play two back-to-back games without stopping even for a minute", said his former coach at VfL Wolfsburg Felix Magath, a notoriously hard task master.
"I'm delighted with my players and what they've achieved this year". I'm happy because it helped the team win and reach the final. And he had this warning for his side ahead of Tuesday's return leg: "The lads are having a great season but in order to make it extraordinary we need to be calm and focused", he said.
Mbappe became the youngest player to score in a Champions League semi-final (18 years & 140 days).