Archbishop Lefebvre had a beard at a time when he was a priest.
Also, the eastern Church (in communion with the Seat of Peter) has always had clergy with long hair and beards. Using the clergy in the Roman rite as the standard of comparison, regarding appearance, is a flawed premise because the eastern Catholics are just as Catholic as clergy in the Roman rite.
Oh yeah, Jesus, the Apostles, St. John the Baptist, etc had long hair and a beard, too.
But as other posters already commented, the external appearance does not really matter (as long as it's still reverent to God and within reason), what really matters is a person's character and their internal relationship with our Lord and Blessed Mother.