The Generali Ladies Linz player party took place on Monday night and the 40 LOVE message was strong.
But the 40 LOVE message wasn't just strong in the decor and the delicious treats on offering...
It was a '70s-themed party - and Top 20 stars Ana Ivanovic and Kirsten Flipkens were in the spirit.
Sandra Klemenschits, Annika Beck and Yvonne Meusburger also turned back the clock for the night.
Sloane Stephens - who was born in 1993, incidentally - also brought out her inner flower child.
And the 1996-born Donna Vekic had no trouble exploring her '70s spirit as well at Monday's party.
A broader look at Stephens and Vekic's attire at the party, which was presented by voestalpine.
Angelique Kerber, the top seed at the International-level event, got into the '70s spirit too.
Kerber posed with Tournament Director Sandra Reichel and former Top 10 player Barbara Schett.
There was a strong Romanian presence - Alexandra Cadantu, Monica Niculescu and Sorana Cirstea.
Niculescu and Cirstea posed for a photo with Klemenschits, who is Austria's No.1 doubles player.
Niculescu with Belgium's Yanina Wickmayer, who won the Generali Ladies Linz title back in 2009.
Young Austrian players Nicole Rottmann, Melanie Klaffner and Lisa Marie Moser at Monday night's party.
Alicja Rosolska and Gabriela Dabrowski at the party, which also featured a Mamma Mia tribute band.
The Generali Ladies Linz is currently in its 23rd year on the WTA calendar - it began in 1991.