No linea nigra - have the scientist missed a way to predict the sex of your baby?

[nics1stbaby]

I am currently 30 weeks pregnant with my first baby. Following my 23 week scan, I know I am having a little boy. Two of my very good friends have recently had baby girls. They both had (have) a linea nigra, and I don't. Out of interest, I have asked around and I now know 3 other cases where with boys the Mums did not develop a linea nigra, and 2 other cases where the Mums had linea nigras with girls.

My friends and I realise that something like this is unlikely to have been missed by all those doctors and scientists, but hey, out of fun.. can anyone back this theory up??

I am so fair skinned that I never had a visible line. I think it shows up better on darker skinned ladies.

my youngest is 3y3m and I've still got a faint linea nigra!

p.s. have two daughters and am fair skinned

About the line appearing on darker skined ladies; I'm half Thai so I have quite dark colouring, but a line never appeared with DD and as yet I still have no line. Btw for the sake of the theory I know this one is a girl too.

I scrubbed mine off!

Message withdrawn

If I have a very faint line does that mean I'll have a Tom Boy?

never got one, waited for it to appear but it never did! I produced a 6lb 14.5oz boy

No linea nigra, fair skinned, girl.

EVERYONE said I was having a boy. The only exceptions were a couple of friends of mine who have only girls, and are girly themselves, and thought I would "suit" a girl, said I was having a girl. It used to grive me MAD!

So thus far - it doesn't matter if your dark skinned, fair or anything inbetween, whether you have heartburn, carry out front, or back, or wave any amount of wedding rings, throw orange peel, dance naked at midnight whilst chanting (OK - getting carried away here) - you just can't tell!

Hey ho! It's lovely to keep guessing at any rate!

I knew what the LN was - but what causes it? Does anyone know?

I had a really dark one ... those that saw it thought it was incredible how obvious it was .... I am fair skinned ... and had a boy ... so doesn't go with the boy/girl theory.
It started to show up from about 5 months pg and only went away when DS was about 12 months.

I didn't have one and I had a girl. Sorry

Linea nigra, big girl, little hair. got it at about 5 months preg and it's still there, she's now 21 weeks old.

1st baby: 10lb boy, no line!
2nd baby: 7lb girl, no line!

Very late appearing linea nigra - big boy! (8.5lbs 2 weeks early)
still there 8 months on...

Ist baby: boy, linea nigra
2nd baby: boy no linea nigra