For men, getting their head shaved on the first day of Navy boot camp has been a rite of passage for decades.

Women are also required to get first-day haircuts to ensure their hair is trimmed to regulation length, equal to the uniform collar.

Though women's heads aren't shaved, long locks are cut to regulation length, equal to the uniform collar.

But the days of these old traditions could be numbered .

Women taking part in a three-month pilot program at Recruit Training Command Great Lakes, Illinois, and Officer Training Command Newport, Rhode Island, will not be required to get their hair shorn. A similar move is being considered for men that, if adopted, would eliminate the decades-long ritual .

The first pilot program will test new rules for women, according to Naval Service Training Command.

Instead of requiring women in boot camp to have their hair cut to the lower edge of the uniform collar , they would only be required to choose a hairstyle that meets Navy uniform regulations, according to the Jan. 8 NSTC release.

But if they still want the traditional haircut — they can request that, too.

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"We are constantly considering fleet feedback and policy changes to improve training and quality of life during initial accession and indoctrination into the Navy," said Rear Adm. Rich Brown, commander of NSTC, in the release.

Female recruits aren't allowed to wear their hair longer or pinned up. As a result, NSTC said, female sailors and officers are not taught proper grooming standards, which would allow them to have longer hair when they reach the fleet

The pilot comes months after a high-profile case in which the Navy booted a mid-career sailor who refused to shear off her locks. Hospital Corpsman 2nd Class (SW/AW) Jessica Sims said she had worn this coiled, natural hairstyle, popular with black women, for the majority of her 12 years in uniform; her new bosses at RTC Great Lakes said the hairstyle violated regs. One of the lessons officials took from the controversy was that female hair regs are neither well-understood nor enforced in the fleet.

The pilot will bring the Navy in line with the other services, none of which require women to get their hair cut as part of recruit training.

"NSTC is considering a similar pilot program change regarding male recruits, following the pilot of the new female haircut program," according to the release.

Men have their heads shaved to one-eighth of an inch when entering training at Great Lakes, Newport and the Naval Academy — a ritual for decades.

They, too, could end up only being required to get a haircut that puts them inside the Navy's grooming standards. After the initial head shaving, all follow-on male haircuts during recruit or basic officer training are only required only to meet the service's grooming standards, a measure that ensures they graduate with regulation haircuts.

Final approval hasn't come for a male hair pilot program, and no schedule has been set, officials say .

"Presently, we are looking into the feasibility and logistics of a male haircut pilot, which would require males to have a regulation haircut of their choosing," NSTC spokesman Lt. Matthew Comer told Navy Times. "Once we determine the feasibility and training value of a male haircut pilot, we would move forward with planning."