Citi Trends (CTRN) could be a solid choice for investors given the company's remarkably improving earnings outlook. While the stock has been a strong performer lately, this trend might continue since analysts are still raising their earnings estimates for the company.The rising trend in estimate revisions, which is a result of growing analyst optimism on the earnings prospects of this clothing and accessories company, should get reflected in its stock price. After all, empirical research shows a strong correlation between trends in earnings estimate revisions and near-term stock price movements. Our stock rating tool -- the Zacks Rank -- has this insight at its core.The five-grade Zacks Rank system, which ranges from a Zacks Rank #1 (Strong Buy) to a Zacks Rank #5 (Strong Sell), has an impressive externally-audited track record of outperformance, with Zacks #1 Ranked stocks generating an average annual return of +25% since 2008.Consensus earnings estimates for the next quarter and full year have moved considerably higher for Citi Trends, as there has been strong agreement among the covering analysts in raising estimates.The chart below shows the evolution of forward 12-month Zacks Consensus EPS estimate:12 Month EPSCurrent-Quarter Estimate RevisionsThe company is expected to earn $2.90 per share for the current quarter, which represents a year-over-year change of +249.48%.Over the last 30 days, one estimate has moved higher for Citi Trends compared to no negative revisions. As a result, the Zacks Consensus Estimate has increased 302.78%.Current-Year Estimate RevisionsFor the full year, the company is expected to earn $5.21 per share, representing a year-over-year change of +118.91%.There has been an encouraging trend in estimate revisions for the current year as well. Over the past month, one estimate has moved up for Citi Trends versus no negative revisions. This has pushed the consensus estimate 73.67% higher.Favorable Zacks RankThe promising estimate revisions have helped Citi Trends earn a Zacks Rank #1 (Strong Buy). The Zacks Rank is a tried-and-tested rating tool that helps investors effectively harness the power of earnings estimate revisions and make the right investment decision. You can see the complete list of today's Zacks #1 Rank (Strong Buy) stocks here.Our research shows that stocks with Zacks Rank #1 (Strong Buy) and 2 (Buy) significantly outperform the S&P 500.Bottom LineWhile strong estimate revisions for Citi Trends have attracted decent investments and pushed the stock 6.2% higher over the past four weeks, further upside may still be left in the stock. So, you may consider adding it to your portfolio right away.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Citi Trends, Inc. (CTRN): Free Stock Analysis Report To read this article on Zacks.com click here.