A grey suit is a versatile piece of clothing that can be paired with many different shirt colors. Here are some suggestions from various fashion blogs:

• White shirt: White is a classic and safe option that complements grey and enhances its tone. It is perfect for a corporate look or a wedding attire.

• Blue shirt: Blue is another great choice that complements grey and helps to add a touch of color. It is a classic option that works well for both daytime and nighttime events.

• Pink shirt: A soft and complimentary pink shirt can add a splash of color to a grey suit. It is a great option for those who want to play with colors without being too overt.

• Green shirt: A tonal deep green shirt can also add a striking touch of color to a grey suit. It is a great option for those who want to experiment with colors.

• Striped or checked shirt: A blue and white striped or checked shirt can be paired with a pale grey suit to create a simple yet effective statement. It also provides the effect of contrasting shades.

• Purple shirt: A dark or light purple shirt can be paired with a grey suit to create a unique and stylish look. It is a great option for those who want to experiment with colors.

• Lemon yellow shirt: A lemon yellow shirt can also be paired with a grey suit to create a refreshing look. It is a great option for daytime events and summer.

• Orange shirt: An orange shirt can be paired with a grey suit to create a bold and vibrant look. It is a great option for those who want to experiment with colors.

It is important to note that grey suits complement well with striped and patterned formal shirts, but it is not recommended to wear casual clothes like t-shirts beneath a grey suit.