Players making their way back to competition after being out for 52 weeks or longer will be able to use their previous ranking to enter 12 tournaments over a three-year period.
Serena Williams was at the centre of a controversy at the 2018 French Open as the former world number one was not given a seed status after missing more than a year of competition to give birth to a daughter.
But a month later, she was given a seeding of 25 for Wimbledon despite being ranked 181st in the world.
The WTA also announced women will be allowed to wear leggings or compression shorts without a skirt, dress or shorts over them.
Williams, who has 23 Grand Slam titles to her name raised eyebrows with an outfit dubbed as a 'cat-suit' at Rolland-Garros this year, and the French Open later said it would introduce a dress code.