If you've ever had issues with Cecily Tynan's on-air outfits, the 6ABC meteorologist has a few words of advice: Be nice, or be quiet.

Tynan let fans know as much via a Facebook post this week in which she responded to a viewer who commented that Tynan's choice of clothing during a recent broadcast was "unprofessional." As Tynan explains in the post, she had filled in for fellow 6ABC meteorologist Adam Joseph, who was sick, and had worn a "sweater, slacks & boots" to work.

"I posted a clip of my outfit. But it's not to solicit your opinion on what I was wearing," Tynan wrote. "Frankly, I don't think it is appropriate for people to use social media to criticize the appearance of others. Usually, the target is a woman, which adds the element of sexism. It happens a lot, to many on-air women."

Tynan, who joined 6ABC in 1995, added that she "studied for years to become a meteorologist," and after nearly 23 years on the station she is "much more concerned with my forecast than my wardrobe." Prior to her run at 6ABC, Tynan also worked as a weather and news anchor for Las Vegas' KTNV, and was a general assignment reporter for Roanoke, Va.'s WDBJ.

Anchors and reporters at 6ABC, Tynan noted, also provide their own wardrobe, and do their own hair and makeup. A station stylist provides input, because "giving her opinion on what we wear is her job," Tynan wrote, "but it's not anyone else's."

So, maybe keep those opinions on Tynan's appearance to yourself. After all, as the meteorologist wrote on Facebook, she'll "wear something different the next day."

"If you don't like what I'm wearing any particular day, please follow the rule I teach my children," Tynan wrote. "'If you don't have something nice to say, don't say anything at all.'"

Tynan, of course, is not the first Philly TV news personality to have to put some viewers back in line in recent years when it comes to comments about anchors' and reporters' personal appearances. Back in 2015, CBS3's Katie Fehlinger directed a message at viewers who criticized her over her baby bump at the time.

"Frankly, I don't care how 'terrible' or 'inappropriate' anyone thinks I look," Fehlinger, also a meteorologist, wrote at the time. Tynan, it seems, would agree.

Tynan's full Facebook message is below:

Facebook/Cecily Tynan