Epic 'Bromance: ' Patrick Stewart locks lips with Ian McKellen

'X-Men' co-stars and best friends Patrick Stewart and Ian McKellen have taken their "bromance" to the next level, as they shared a "lip-lock" at 'Mr. Holmes' premiere in London.

The 74-year-old Stewart attended the celebratory affair at ODEON Kensington with his wife, Sunny Ozell, by his side, but all of his attention was on his pal, Us Magazine reported.

The 'Star Trek' actor grinned as he greeted McKellen giving him a big kiss and a tight embrace as they said hello.