Objectives: We aimed to study the effect of maternal WHR and the effect of early fetalCRL by 11w-13w6d scan on fetalbirth weight and to compare the two in predictingfetal birth weight.  Methods: A cross sectional, prospective study was conducted at a secondary care hospital over a period of 12 months. 387 pregnant women, booked at first trimester were recruited as per inclusion & exclusion criteria. Their WHRs were recorded at first visit (upto13w6d), followed by recording of CRL at 12+weeks scan and they were followed up till the delivery when fetal birth weights were noted. The data obtained was anonymized and analyzed using SPSS software version 22.0. Results: We found that either increased maternal WHRs or increased delta CRL (> + 3 days) did not present study, probably due to small sample size. Conclusion: We concluded that increased WHR and CRL are not related to LGA babies. Probably more studies with larger sample size will be needed to make a definite conclusion or anticipate complications like GDM and shoulder dystocia. References: 1. Salem et al. Maternal waist to hip ratio is a risk Factor for macrosomia. BJOG.2011. 2. Brown et al. Maternal Waist-to-Hip Ratio as a predictor of newborn size: results of the Diana project. Epidemiology 1995. 3. Hackmon et al. Is severe macrosomia manifested at 11-14 weeks of gestation? Ultrasound Obstet Gynecol.2008; 32:740-743.