[2] She made her WTA Tour debut at the 2022 Copa Colsanitas, defeating seventh seed Astra Sharma to reach the second round, [3] where she lost to Irina Bara in three sets.

[9] Lamens reached her first WTA Tour quarterfinal at the 2024 Budapest Grand Prix defeating eighth seed Varvara Gracheva[10] and Carole Monnet,[11][12] before losing to Aliaksandra Sasnovich.

[13] At the 2024 Japan Women's Open in Osaka, she qualified for the main draw and defeated sixth seed Viktoriya Tomova for her second career Top 50 win on the WTA Tour.

[16] After overcoming seventh seed Diane Parry in the last four, her third consecutive Top 100 win,[17] Lamens defeated fellow qualifier Kimberly Birrell in straight sets to claim her first WTA title.

[19] Lamens made her major main draw debut at the 2025 Australian Open,[20] defeating qualifier Veronika Erjavec in the first round,[21] before losing to Belinda Bencic in her next match.