By Sara Sjolin, MarketWatch

LONDON (MarketWatch) -- European stock markets rose for a fifth-straight day on Tuesday after new U.S. Federal Reserve Chairwoman Janet Yellen said the central bank will stick to the low-interest rate strategy for now.

The Stoxx Europe 600 index rallied 1.3% to end at 329.52, closing at the highest level in almost three weeks.

Lagardere SCA jumped 5.3% after the media company said it expects to post better-than-anticipated profit growth for 2013, even as sales were dragged lower by a firmer euro.

Shares of Johnson Matthey PLC climbed 3.2% after the chemicals firm appointed Den Jones, a former executive at BG Group, as finance director.

On a more downbeat note, shares of Barclays PLC (BCS) dropped 3.8% after the U.K. bank said bonuses rose 10% last year, even as it posted a drop in underlying profit. It also said it aims to shrink its balance sheet and to cut up to 12,000 jobs.

Shares of L'Oréal SA declined 3.3% after news that the cosmetics firm will buy back an 8% stake from Nestle SA (NSRGY). Nestlé shares lost 0.8%.

Economic news was relatively light in Europe on Tuesday, with investors instead focusing on Janet Yellen's first testimony before Congress. The new Fed boss said markets should expect the central bank to continue to follow the low-interest rate path laid out by her predecessor Ben Bernanke. She also stressed that the Fed won't necessarily tighten policy when the unemployment rate drops below the 6.5% threshold, as it is likely to do within the next few months.

"I served on the Federal Open Market Committee as we formulated our current policy strategy and I strongly support that strategy," she said.

In line with the Fed's latest policy statement, she said the bank will continue to taper its asset purchases at future meetings if the economy improves as expected, although the pullback isn't on a preset course.

"From her testimony, it is clear that she is very focused on the weak job market, and remains concerned about the recent weakness in the data," said Lindsey Piegza, chief economist at Sterne Agee in a note.

U.S. stocks are higher on Wall Street.

In Europe, Germany's DAX 30 index rallied 2% to 9,478.77. Car makers helped lift the German benchmark, after BMW AG , up 3%, said car deliveries rose 7.8% in January. Daimler AG gained 3.7%, and Volkswagen AG put on 2.6%.

France's CAC 40 index rose 1.1% to 4,283.32, and the U.K.'s FTSE 100 index gained 1.2% to 6,672.66.

Banks generally also helped lift indexes. Shares of BNP Paribas SA gained 2.3% in Paris, HSBC Holdings PLC (HSBC) rose 1.8% in London and Deutsche Bank AG (DB) added 1.1% in Frankfurt.

Alcatel-Lucent SA lost 4.4% after Morgan Stanley cut the telecom-equipment firm to equal weight from overweight, as the share price moved closer to the target price.

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